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mara lawniczak

@marakat.bsky.social
836 followers 368 following 72 posts

senior group leader @sangerinstitute. evolutionary geneticist malaria & biodiversity. lifetime member of darwin's posse. obsessive tidepooler. hearts cephalopods. our lab leads the Malaria Cell Atlas, UK BIOSCAN, and ANOSPP projects.

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Reposted by mara lawniczak
Leah Houri-Zeevi @leahhouri.bsky.social · 25/09/2026
🩸🩸🩸TODAY WE SHARE TWO MAJOR DISCOVERIES🩸🩸🩸 1. We peered into genomes and brains of the rare mosquitoes that QUIT feeding on blood and found what biting is built from 2. Humans got rid of isoleucine in their blood, malaria suffers from it, and mosquito proteomes budget for it THREADS>
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mara lawniczak @marakat.bsky.social · 21/09/2026
this was a fun one -- found a beautiful but doomed privet hawkmoth caterpillar -- see those tiny tachinid eggs on its side? wellcomeopenresearch.org/articles/11-...
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mara lawniczak @marakat.bsky.social · 28/08/2026
DNA barcoders and people interested in this area -- a community forum is happening -- register to attend here docs.google.com/forms/d/e/1F...
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mara lawniczak @marakat.bsky.social · 10/08/2026
new preprint from our group led by Talleh Almelli -- important for folks doing single cell on malaria parasites or other organisms with hyperdiverse gene families. www.biorxiv.org/content/10.6...
biorxiv.org
Evaluating the impact of a sample-matched reference genome on single-cell transcriptomic inferences in Plasmodium falciparum
Background Plasmodium falciparum field isolates exhibit genomic variation, including copy number variation and sequence divergence. In contrast, the P. falciparum 3D7 reference genome (Pf3D7) was deri...
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KamilSJaron.bsky.social @kamilsjaron.bsky.social · 23/07/2026
New preprint: 338 coleopteran genomes reveal exceptional rearrangement variation compared to other insect orders. Big congrats to @arf-mln.bsky.social, for getting this giant piece together. Big collaboration of @joanameier.bsky.social's and my groups. 🧵👇 doi.org/10.64898/202...
Phylogeny of 338 species with tips painted by the chromosomal ancestry of their contemporary genomes (well separated colours indicate only few changes, while blending indicates rearrangements). Colouring of the branches is by the number of rearrangements. The ring between paints and phylogeny indicates wether the chromosomal rearrangement was fusion dominated (brown) or fission dominated (teal) process.  
Photo credits: Udo Schmidt, Lech Borowiec, JL Tachet, David Navrátil, Fred Chevaillot, Siga, Cosmin Manci, John Hallmén, Igor Souza-Gonçalves, Alex Hyde, H. Coiffait, David Ignace, Yves Bousquet.
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Earth BioGenome Project 🌍 @ebpgenome.bsky.social · 14/07/2026
❄️🧬 Can we generate high-quality reference genomes without the cold chain? A new study suggests the answer is yes. DNA preserved at room temperature for up to one week produced chromosome-scale reference genomes. 📖 tinyurl.com/3zwtj9ka #Genomes @gigascience.bsky.social @sangerinstitute.bsky.social
Close-up photograph of a mosquito perched on a green blade of grass against a dark background. White text at the top reads, "Breaking the Cold Chain." Additional text states, "Room-temperature preservation enables chromosome-scale reference genomes." "GigaScience 2026" appears in the lower-right corner.Three researchers collect biological samples in a forest. One researcher kneels while holding a collection tube beside an insulated cooler, and two others stand nearby preparing samples. A large arrow points to the cooler. Text explains that high-quality reference genomes traditionally require specimens to remain frozen from collection through DNA extraction, highlighting the challenge of maintaining the cold chain during fieldwork.
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Biodiversity Genomics Europe plus (BGE+) @biogeneurope.bsky.social · 09/07/2026
TRAINING: DNA barcoding and metabarcoding using ONTOLOGY™ biodiversitygenomics.eu/2026/07/09/d... Join us October 5-7 @nhm-london.bsky.social for a 3-day course on #ONTOLOGY a new platform for distributed #DNAbarcoding & #metabarcoding from our partners @cbg-uofg.bsky.social. @iboleurope.bsky.social
biodiversitygenomics.eu
BGE+ NEW COURSE: DNA barcoding and metabarcoding using ONTOLOGY™ - Biodiversity Genomics Europe
ONTOLOGY is a new platform for distributed DNA barcoding and metabarcoding—is integrates freeze-dried ‘just-add-water’ PCR plates that complete indexing and amplification in one step, and software tha...
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Xavier Grau-Bové 🌾 @xgrau.bsky.social · 19/06/2026
Do you work with scRNAseq data in non-model organisms that have less-than-stellar gene annotations? ✨ 🧬 You might be interested in GeneExt, a nifty little tool by @zolotarg.bsky.social in @arnausebe.bsky.social's lab, published in #Bioinformatics earlier this year. #singlecell #transcriptomics
academic.oup.com
GeneExt: a gene model extension tool for enhanced single-cell RNA-seq analysis
AbstractMotivation. Incomplete gene models negatively impact single-cell gene expression quantification. This is particularly true in non-model species whe
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mara lawniczak @marakat.bsky.social · 06/06/2026
really enjoyed being a small part of bringing together this analysis of hundreds of Darwin Tree of Life fly genomes. outstanding work by @juliagries.bsky.social, sam ebdon, and @kamilsjaron.bsky.social
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mara lawniczak @marakat.bsky.social · 29/05/2026
If you are interested in collecting specimens for chromosomal genomes and/or generating chromosomal reference genomes from specimens that were not cold-chain preserved, please read on and share this thread.
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mara lawniczak @marakat.bsky.social · 18/02/2026
new reference genomes for Plasmodium ovale wallikeri and Plasmodium malariae (& Pf too) direct from blood taken from children carrying these parasites -- this was done with as little as 2 ng of DNA. all sorts of craziness going on in the subtelomeric regions ...
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Richard Sever @richardsever.bsky.social · 12/01/2026
Preprints of pandemic potential - new historical piece from me on the history of bioRxiv/medRxiv, their role in the pandemic, and the way forward. 1/n journals.asm.org/doi/10.1128/...
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Matthew Cobb @matthewcobb.bsky.social · 11/01/2026
Don’t forget that the 1961 triplet code paper only became elegant when it was written! The experiments were all a bit of a mess... I suspect the same was true of the other classic papers!
onlinelibrary.wiley.com
A breakthrough from 60 years ago: “General nature of the genetic code for proteins” (1961)
In 1961, Francis Crick and Sydney Brenner, together with two Cambridge colleagues, published an article in Nature that used simple genetic experiments to demonstrate that the genetic code was almost ...
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Arnau Sebé-Pedrós @arnausebe.bsky.social · 02/01/2026
Open Senior Bioinformatician position at @sangerinstitute.bsky.social Tree of Life, to work on the Biodiversity Cell Atlas initiative with @marakat.bsky.social and me. 📅 Apply by January 18 🔗 sanger.wd103.myworkdayjobs.com/en-US/Wellco... Please share with anyone who might be interested!
sanger.wd103.myworkdayjobs.com
Senior Bioinformatician - Biodiversity Cell Atlas
Do you want to help us improve human health and understand life on Earth? Make your mark by shaping the future to enable or deliver life-changing science to solve some of humanity’s greatest challenge...
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Wellcome Sanger Institute @sangerinstitute.bsky.social · 15/12/2025
Join our Tree of Life Programme as a Group Leader in Biodiversity Genomics at the Wellcome Sanger Institute. Lead ambitious, large-scale genomics research to understand life’s diversity on Earth. 🔗 Learn more and apply: sanger.wd103.myworkdayjobs.com/en-US/Wellco... 📅 Closing date: 8 February 2026
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The Global Vector Hub @globalvectorhub.bsky.social · 10/12/2025
🧐 Looking for a #PhD? University of Glasgow @glasgow.ac.uk @sbohvm.gla.ac.uk is offering two fully funded PhD positions within the new VectorGrid-Africa network!🦟 More details: www.gla.ac.uk/colleges/mvl... 📆Application deadline: 12 January 2026.
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Charlotte Wright @charlottewright.bsky.social · 10/12/2025
Are you excited about pangenomics? If so, join us in Edinburgh on 8-9th June to discuss the latest methods & insights from using these approaches across biodiversity! More details here: royalsociety.org/science-even... Organised together with @henrylnorth.bsky.social & @joanameier.bsky.social!
royalsociety.org
Pangenomics transforms evolutionary biology | Royal Society
This Theo Murphy meeting organised by Dr Joana Meier, Dr Henry North and Dr Charlotte Wright, will showcase cutting-edge pangenome tools, applied uses of pangenomes which are transforming health and a...
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Antoine Claessens @ant1-claessens.bsky.social · 09/12/2025
Tired of 3D7? Need real P. falciparum genomes from real infections? We’ve got you: 43 PacBio HiFi–assembled genomes from The Gambia, with full var/rifin/stevor repertoires in all their wild diversity. Data now public! www.biorxiv.org/content/10.1... (1/2)
biorxiv.org
De novo assembly of complete Plasmodium falciparum isolate genomes using PacBio HiFi sequencing technology
Plasmodium falciparum possesses a highly structured genome with extensive sequence diversity concentrated in Variant Surface Antigen (VSA) families. These genes— var , rif , and stevor —play key roles...
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mara lawniczak @marakat.bsky.social · 20/11/2025
a life changing opportunity made possible by the Nobel Prize funds awarded to John Sulston -- the @sangerinstitute.bsky.social runs the Sanger Prize scheme, open to an undergrad from any LMIC to spend 3 months here learning all about genomics. more details here www.sanger.ac.uk/about/study/...
sanger.ac.uk
The Sanger Prize
The Sanger Prize is an outreach competition aimed at undergraduate students who live and study in low or middle income countries
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Arnau Sebé-Pedrós @arnausebe.bsky.social · 03/12/2025
Open postdoc position at @sangerinstitute.bsky.social Tree of Life to contribute to the Biodiversity Cell Atlas, with a focus on spatial transcriptomics. Apply by January 4 sanger.wd103.myworkdayjobs.com/en-GB/Wellco... Please share with anyone who might be interested!
sanger.wd103.myworkdayjobs.com
Postdoctoral Fellow - Biodiversity Cell Atlas
Do you want to help us improve human health and understand life on Earth? Make your mark by shaping the future to enable or deliver life-changing science to solve some of humanity’s greatest challenge...
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mara lawniczak @marakat.bsky.social · 03/12/2025
please share this postdoc job alert! come join the budding Biodiversity Cell Atlas initiative as a postdoc or senior postdoc at @sangerinstitute.bsky.social working closely with @arnausebe.bsky.social and me to make progress on what we cover in this paper www.nature.com/articles/s41...
nature.com
The Biodiversity Cell Atlas: mapping the tree of life at cellular resolution - Nature
The Biodiversity Cell Atlas aims to create comprehensive single-cell molecular atlases across the eukaryotic tree of life, which will be phylogenetically informed, rely on high-quality genomes and use...
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mara lawniczak @marakat.bsky.social · 20/11/2025
a life changing opportunity made possible by the Nobel Prize funds awarded to John Sulston -- the @sangerinstitute.bsky.social runs the Sanger Prize scheme, open to an undergrad from any LMIC to spend 3 months here learning all about genomics. more details here www.sanger.ac.uk/about/study/...
sanger.ac.uk
The Sanger Prize
The Sanger Prize is an outreach competition aimed at undergraduate students who live and study in low or middle income countries
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mara lawniczak @marakat.bsky.social · 20/11/2025
final week to apply for @sangerinstitute.bsky.social PhD programme (due Nov 27th) -- free to apply, open to anyone anywhere, and a superb training opportunity for students interested in genomic approaches applied to biodiversity, pathogens, vectors, and of course us pesky humans.
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Yuki Haba @yukihaba.bsky.social · 25/10/2025
How does life evolve to adapt to modern cities? Out now in Science, my PhD work with @lindymcbr.bsky.social uncovers the ancient origin of the “London Underground mosquito” – one of the most iconic examples of urban adaptation. 🧵(1/n) @science.org www.science.org/doi/10.1126/science.ady4515
science.org
Ancient origin of an urban underground mosquito
Understanding how life is adapting to urban environments represents an important challenge in evolutionary biology. In this work, we investigate a widely cited example of urban adaptation, Culex pipie...
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Reposted by mara lawniczak
PLOS Biology @plosbiology.org · 22/10/2025
#Microsporidia are #parasites of growing importance. @amjadkhalaf.bsky.social @mblaxter.bsky.social @marakat.bsky.social &co present 40 new genomes from #DarwinTreeofLife sequencing of their arthropod hosts, revealing insights into #tetraploidy & #reproduction @plosbiology.org 🧪 plos.io/48HsAQJ
Top: Prevalence of Microsporidia in DToL insect genomes. Microsporidian genomes recovered from insect hosts, split by taxonomic order. F: female, M: male, U: unspecified sex. Bottom: Simplified proposed generalized lifecycle for Microsporidia. This proposed model posits that each nucleus is a diploid, and that microsporidian reproduction mirrors reproduction in Fungi with stages similar to karyogamy, plasmogamy, and a stable “heterokaryon” (known as a diplokaryon in Microsporidia). Importantly, both the diplokaryotic and monokaryotic phases are parasitic, and species may spend most of their lifecycle in one or the other phase, giving rise to “diploid” and “tetraploid” lineages.
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mara lawniczak @marakat.bsky.social · 22/10/2025
new publication by @amjadkhalaf.bsky.social who mined arthropod reference genome data for hidden microsporidia reads and then did a whole lot of assembling and sleuthing! great job @amjadkhalaf.bsky.social !
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mara lawniczak @marakat.bsky.social · 08/10/2025
The fight against #malaria is at a crossroads. Together with colleagues worldwide, I’ve signed an Open Letter urging #IUCN members to keep the door open to responsible research and new tools that could help reverse stalled progress and save lives. Add your voice here scienceforbiodiversity.org
scienceforbiodiversity.org
Science for Biodiversity
Synthetic biology: Hope for conservation requires keeping all options on the table.
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Arnau Sebé-Pedrós @arnausebe.bsky.social · 24/09/2025
Happy to share the Biodiversity Cell Atlas white paper, out today in @nature.com. We look at the possibilities, challenges, and potential impacts of molecularly mapping cells across the tree of life. www.nature.com/articles/s41...
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Erica McAlister @flygirlnhm.bsky.social · 19/09/2025
www.nhm.ac.uk/discover/new... Mosquitoes that have been in the collection for nearly a hundred years are helping us in dealing with an even older but also current problem - malaria @sangerinstitute.bsky.social @nhm-london.bsky.social
nhm.ac.uk
Genetic study of malaria-carrying mosquitoes tracks evolution of insecticide resistance | Natural History Museum
It crucially also reveals promising genetic targets for potential control.
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Wellcome Sanger Institute @sangerinstitute.bsky.social · 19/09/2025
One of the most dangerous malaria-carrying mosquitoes is rapidly evolving in response to control efforts, genetics has revealed. Findings could inform smarter tools to monitor for and fight malaria. 🦟 Read more here ⤵️ bit.ly/4pwQKDv
bit.ly
Genomic evolution of major malaria-transmitting mosquito species uncovered
Sequencing hundreds of Anopheles funestus mosquitoes provides new insights into the evolutionary patterns of this important human malaria-transmitting species.
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marilou boddé @mariloumercedes.bsky.social · 18/09/2025
Our paper Genomic diversity of the African malaria vector Anopheles funestus was published in Science today! It features inversions, selection in action, museum specimens and putative new ecotypes. doi.org/10.1126/scie...
doi.org
Genomic diversity of the African malaria vector Anopheles funestus
Anopheles funestus s.s. is a major human malaria vector across Africa. To study its evolution, especially under vector control pressure, we sequenced 656 modern specimens (collected 2014 to 2018) and ...
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Charlotte Wright @charlottewright.bsky.social · 11/09/2025
How many chromosomes can an animal have? In our paper out now in @currentbiology.bsky.social we show that the Atlas blue butterfly has 229 chromosome pairs- the highest in diploid Metazoa! These arose by rapid autosome fragmentation while sex chromosomes stayed intact. www.cell.com/current-biol...
tinyurl.com
Constraints on chromosome evolution revealed by the 229 chromosome pairs of the Atlas blue butterfly
The genome of the Atlas blue butterfly contains ten times more chromosomes than most butterflies, and more than any other known diploid animal. Wright et al. show that this extraordinary karyotype is ...
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Earth BioGenome Project 🌍 @ebpgenome.bsky.social · 04/09/2025
🚀🧬🔥 Hot off the press — 2025! Don’t miss this must-read publication: bit.ly/4mJwFb7 This groundbreaking paper sets the stage for Earth BioGenome Project Phase II — where EBP is gearing up to scale genome sequencing 10× faster than ever before! 🌍✨
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Prof Sheena Cruickshank @sheencr.bsky.social · 19/07/2025
Malaria cases surge in Zimbabwe largely due to abrupt cut in USAID that affected mosquito net provision and surveillance measures. The Zimbabwean government trying to step up but can’t make up for the damage the sudden cessation. Climate change further increases mosquito burden too
theguardian.com
Malaria ‘back with a vengeance’ in Zimbabwe as number of deaths from the disease triple
Withdrawal of USAID funds threatens decades of progress, say experts, with cuts to research and shortage of mosquito nets putting thousands at risk across the country
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Erik Garrison @thinks.lol · 17/07/2025
Postdoc position opening in my group! Research projects: pangenomes for diverse organisms, genome evolution, biocomputing, language models. Please reach out if interested!
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mara lawniczak @marakat.bsky.social · 07/07/2025
new from the lab -- we investigate 100% ethanol, DMSO salt solution (DESS), EDTA, RNAlater, and AllProtect as possible approaches for short term room temperature preservation of mosquito HMW DNA, nuclei for Hi-C, and RNA towards high quality reference genome creation. the key findings/tips are ....
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mara lawniczak @marakat.bsky.social · 07/07/2025
new from the lab -- we investigate 100% ethanol, DMSO salt solution (DESS), EDTA, RNAlater, and AllProtect as possible approaches for short term room temperature preservation of mosquito HMW DNA, nuclei for Hi-C, and RNA towards high quality reference genome creation. the key findings/tips are ....
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mara lawniczak @marakat.bsky.social · 04/06/2025
several years ago, the @ebpgenome.bsky.social sample collection and processing subcommittee ran a survey to understand more about people's successes and failures with HMW DNA extractions across the tree of life -- we planned to publish the results of this survey alongside the randomly drawn ...
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mara lawniczak @marakat.bsky.social · 04/06/2025
Cambridge-Africa ALBORADA research funding call is now open - great for getting new collaborations started www.cambridge-africa.cam.ac.uk
cambridge-africa.cam.ac.uk
Supporting research on African priorities :: Cambridge-Africa
Cambridge-Africa is a University programme that supports African researchers and promotes mutually beneficial collaborations and equitable partnerships between Africa and Cambridge
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Max Kozlov @maxkozlov.bsky.social · 02/06/2025
Researcher Amita Gupta has spent more than a decade planning and running a $70-million trial to study a new tuberculosis drug, enrolling ~6,000 participants in 13 countries. It might all have been for nothing. That's because a new NIH policy has abruptly cut off billions to trials abroad. 🧪
nature.com
NIH grant cuts will axe clinical trials abroad — and could leave thousands without care
US agency’s new policy could abruptly end studies of infectious diseases and cancer, leaving researchers scrambling for funds.
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Amjad Khalaf 🇵🇸 @amjadkhalaf.bsky.social · 16/05/2025
New preprint! We generate 40 new high-quality microsporidian genomes from infected arthropod hosts that were sequenced to create reference genomes by the Darwin Tree of Life project. 8 of our genomes are chromosome-level, and we’re able to generate Hi-C data for 7! 🧬 www.biorxiv.org/content/10.1...
biorxiv.org
Forty New Genomes Shed Light on Sexual Reproduction and the Origin of Tetraploidy in Microsporidia
Microsporidia are single-celled, obligately intracellular parasites with growing public health, agricultural, and economic importance. Despite this, Microsporidia remain relatively enigmatic, with man...
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mara lawniczak @marakat.bsky.social · 08/05/2025
a bit of light in dark times for infectious disease research and ultimately control www.gatesfoundation.org/ideas/articl...
gatesfoundation.org
My new deadline: 20 years to give away virtually all my wealth
During the first 25 years of the Gates Foundation, we gave away more than $100 billion. Over the next two decades, we will double our giving.
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mara lawniczak @marakat.bsky.social · 14/04/2025
if you are trying to get HMW DNA out of any species, have a look at the stellar progress from Sanger Tree of Life core lab who have now extracted DNA from 1000s of species. Paper showcasing things learned along the way now up on bioRxiv at www.biorxiv.org/content/10.1...
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mara lawniczak @marakat.bsky.social · 25/03/2025
propose reference genomes that you can supply tissue for for any mosquito species here tinyurl.com/MosquitoReferenceGenomes
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Daniela Robles-Espinoza @daniela-oaks.bsky.social · 25/03/2025
Next up is Miguel Garcia-Knight, head of @levelab.bsky.social at UNAM 🇲🇽, and he's telling us about adaptive #antiviral immunity and viral vector #ecology @sangerinstitute.bsky.social #IFR2025
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mara lawniczak @marakat.bsky.social · 26/02/2025
speaking of new mosquito reference genomes, here is a new one for Culex pipiens pipiens wellcomeopenresearch.org/articles/10-...
wellcomeopenresearch.org
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mara lawniczak @marakat.bsky.social · 25/02/2025
1 ng for up to 3 Gb genome!
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mara lawniczak @marakat.bsky.social · 25/02/2025
please take this survey if you use Darwin Tree of Life genomes! we are really keen to understand impact of these genomes on your science and wider work. Thank you!
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mara lawniczak @marakat.bsky.social · 24/02/2025
globally, there are ~3500 described mosquito species in the Culicidae family and many of these are important vectors of disease but only a small percentage have genomic resources. we are launching a pilot project to generate high quality reference genomes for 100 important mosquito species [1/3]
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Albert Vilella, PhD. @albertvilella.bsky.social · 16/02/2025
The pointless destruction of the scientific and medical research system open.substack.com/pub/stevensa...
open.substack.com
The pointless destruction of the world's leading scientific and medical research system
No one benefits from this
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