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David Tomaz, PhD

@dctomaz.bsky.social
203 followers 1.1K following 51 posts

Immunologist & translational scientist | NK cells, signal integration & immunology. Science, education & human rights. My own opinions. 🌐🏳️‍🌈🏳️‍⚧️ | 🇵🇹🇬🇧🇨🇻🇺🇸 🧬He/Him

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David Tomaz, PhD @dctomaz.bsky.social · 19m
🎨 Science has a visual language too. Dive into the SciArt feed — medical illustration, palaeoart, space art, wildlife — and contact the artists bringing it all to life. #SciArt #SciComm
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Reposted by David Tomaz, PhD
NSF–DOE Rubin Observatory @rubinobservatory.org · 11h
Not a bad office view🌌 This image of NSF–DOE Rubin Observatory shows the Milky Way & the ghostly glow of zodiacal light caused by sunlight reflecting off Solar System dust. Zodiacal light is faint, but Cerro Pachón's dark skies make it possible to see! 🔭🧪
Large boot-shaped observatory building under a clear star-filled night sky on a mountain. The glowing band of the Milky Way stretches low and parallel to the horizon on the left, while the faint, barely-there haze of zodiacal light stretches diagonally up and right.
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David Tomaz, PhD @dctomaz.bsky.social · 12h
🚀 Biomedical research beyond Earth: ageing, microbiome, radiation and cardiovascular health. Science and Space Symposium | Lisbon, 21–22 Oct 2026. Registration closes 9 Oct. care.gimm.pt/science-and-... #SpaceMedicine #Science
care.gimm.pt
Science and Space Symposium | Biomedical Research beyond Earth – GIMM – CAREScience and Space Symposium | Biomedical Research beyond Earth – GIMM – CARE
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David Tomaz, PhD @dctomaz.bsky.social · 30/09/2026
Will AI ever win its own Nobel? Not sure. Better ask AI first 🙃 www.nature.com/articles/d41...
nature.com
Will AI ever win its own Nobel? Some predict a prize-worthy science discovery soon
Other researchers question whether autonomous AI scientists are possible or even desirable.
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Reposted by David Tomaz, PhD
Nature Reviews Immunology @natrevimmunol.nature.com · 28/09/2026
Nature Reviews Immunology turns 25! 🎉 To celebrate this milestone, leading immunologists share their perspectives on the questions, challenges and opportunities that will shape the future of the field (free with registration) rdcu.be/WZoeqVqWqk3a #NRI25 #Immunology #SciencePublishing
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David Tomaz, PhD @dctomaz.bsky.social · 30/09/2026
🧬 A 77-liver single-cell atlas identifies OLR1+ macrophages associated with fibrosis. Targeting OLR1 reduced fibrogenic activity in human cell models—a candidate target, not a validated treatment. doi.org/10.1038/s415... #Immunology #Fibrosis
doi.org
A human single-cell atlas identifies OLR1+ scar-associated macrophages as a potential therapeutic target for chronic liver disease - Nature Genetics
This study provides a single-cell RNA-sequencing atlas of 77 healthy and chronic liver disease livers and identifies a subpopulation of pro-inflammatory scar-associated macrophages enriched for OLR1 e...
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Reposted by David Tomaz, PhD
ESA Space Science @science.esa.int · 29/09/2026
A galactic house of mirrors 🌌🪞 Webb has captured this spectacular view of the galaxy cluster MACS J0454.1-0300. Its gravity is warping & multiplying the images of background galaxies, which appear like they have stepped into a house of mirrors! Read more 👉 www.esa.int/ESA_Multimed... 🔭 🧪
A massive galaxy cluster, made of many golden elliptical galaxies with the largest, brightest one in the centre. Heavily distorted orange galaxies appear all around the cluster, the largest concentrated in a large arc around the cluster's centre; these are images of very distant galaxies, created by gravitational lensing. A few galaxies are large and bluish-white in colour; bright, nearby stars are the same colour. Credit: ESA/Webb, NASA & CSA, L. Furtak, S. Fujimoto
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David Tomaz, PhD @dctomaz.bsky.social · 29/09/2026
🧬 In 31 transplant recipients, single-cell and spatial profiling linked severe graft-versus-host disease to persistent T-cell clones and tissue-resident programs near intestinal crypts. Candidate biomarkers—not a validated test. doi.org/10.1038/s415... #Immunology
doi.org
Spatiotemporal single-cell profiling reveals T cell clonal dynamics and phenotypic plasticity in human graft-versus-host disease - Nature Immunology
Shi et al. use a spatiotemporal framework to profile alloreactive T cells in humans undergoing hematopoietic cell transplantation and demonstrate how severe graft‑versus‑host disease is driven by tiss...
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David Tomaz, PhD @dctomaz.bsky.social · 29/09/2026
🧬 UpTCR predicts TCR–antigen–HLA recognition from incomplete data. Eight predicted melanoma-antigen variants activated engineered Jurkat cells in lab assays. A tool for testing immune recognition—not a proven therapy. doi.org/10.1038/s414... #Immunology #AI
doi.org
UpTCR: a unified progressive knowledge transfer foundation model for robust T-cell receptor-antigen binding recognition - Nature Communications
Peptides are presented to T Cell receptors (TCR) in the context of human leukocyte antigen (HLA) MHC molecules and the prediction of these peptide sequences are important for vaccines and cancer thera...
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David Tomaz, PhD @dctomaz.bsky.social · 29/09/2026
🪐 A methane-producing Earth microbe grew in simulated Enceladus ocean chemistry, using hydrogen from water–rock reactions—even at pH 11. This tests possible habitability, not whether life exists there. doi.org/10.1126/scia... #Astrobiology
doi.org
Enceladus-like geochemistry fuels methanogenesis under extreme CO2 limitation
Saturn’s icy moon Enceladus features chemical signatures consistent with an alkaline soda ocean with H2 production via hydrothermal water-rock reactions. Chemolithoautotrophic methanogenesis is thermo...
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David Tomaz, PhD @dctomaz.bsky.social · 25/09/2026
How the ‘fire amoeba’ withstands temperatures that would kill most complex life | Science | AAAS www.science.org/content/arti... #Extremophiles #Amoeba #Microbiology #CellBiology #Evolution #Astrobiology #Science 🔬🔥🦠
science.org
How the ‘fire amoeba’ withstands temperatures that would kill most complex life
Incendiamoeba cascadensis may survive in volcanic lakes thanks to a static blanket that shields its proteins from the heat
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David Tomaz, PhD @dctomaz.bsky.social · 25/09/2026
Now this is a beautiful use of CRISPR. 🧬 15 mycobacterial species distinguished in 3.5 hours — no painfully long culture times. Translational science doing its job. 🔬 #CRISPR #Microbiology #Diagnostics #Mycobacteria #Biotechnology #TranslationalScience #Science
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David Tomaz, PhD @dctomaz.bsky.social · 25/09/2026
Left the chat 🚶🚶🚶 #FreePalestine #StandWithPalestine #HumanRights
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
🧬Immune signalling can outlast receptor attachment. TRAM helps release MyD88 complexes from TLRs, sustaining inflammatory activity. A mechanistic study in macrophages. doi.org/10.1038/s415... #Immunology #immunesignalling #inflammation
doi.org
TRAM promotes Toll-like-receptor-free myddosome signal transduction - Nature
TRAM is a regulator of myddosome assembly through dissociating MyD88 from the TLR–TIRAP complex to enable myddosome maturation and durable downstream signal transduction.
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
YESSSS! ❤️🤍💙❤️🤍
nytimes.com
Alexandria Ocasio-Cortez on 2028: ‘Life Doesn’t Wait for You to Be Ready’
In a wide-ranging interview, the New York congresswoman offered her most detailed insight yet into how she is thinking about a possible presidential run.
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
🤖 Stanford’s AI agents analysed cancer data and proposed a B7-H3-targeted antibody–drug conjugate for lung cancer. A proof of concept for AI-assisted drug discovery. Read the NYT article #AIinScience #DrugDiscovery www.nytimes.com/2026/09/17/w...
nytimes.com
A.I. Agents as ‘Co-Scientists’? This Lab Says They Could Speed Drug Research.
A.I. is already a powerful tool for scientific discovery. Now, some biomedical researchers are teaching it to do even more.
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
🧪 The order of immune signals matters. A human B-cell model reproduces germinal-centre features in culture, including somatic hypermutation. A useful research tool—not a complete germinal centre. doi.org/10.1126/scii... #Immunology #BCells
doi.org
In vitro induction of human germinal center B cells
Human induced GC-like B (iGCB) cells are generated in vitro from circulating naive or marginal zone cells.
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
🧬 Can engineered Tregs stay stable under inflammation? Deleting a regulatory element near IRF4 helped preserve their suppressive function in preclinical experiments. Patient benefit remains unproven. doi.org/10.1038/s415... #Immunology #CellTherapy
doi.org
Deletion of a distal IRF4 element prevents inflammation-induced reprogramming of human regulatory T cell fate - Nature Immunology
Tang and colleagues identify a distal IRF4 chromatin regulatory region that governs human Treg cell stability.
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
Happy belated Bi Visibility Day! 🩷💜💙 Celebrating bisexual visibility, today and every day. #BiVisibilityDay #BiPride
static.klipy.com
Heartstopper S2
ALT: Heartstopper S2
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
AI is starting to do parts of discovery itself, not just speed it up. After VIPR, Minerva and Paper2Agent, agents mined 200,000+ RTs and found ART, a phage system with a CRISPR-like repeat array. What it does is still unknown. 🧬 #AIinScience www.anthropic.com/news/claude-...
anthropic.com
Claude discovers a novel enzyme system
In early results from our new life sciences research lab, Claude agents found an enzyme system whose function is still unknown.
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David Tomaz, PhD @dctomaz.bsky.social · 24/09/2026
🔬 An EMBL ARISE placement at Monash University shows how international exchange can strengthen technical expertise and research infrastructure in Australia. #EMBL #ARISE #MonashUniversity #AustralianScience www.emblaustralia.org/richard-jaco...
emblaustralia.org
Building Australia's research infrastructure capability through international collaboration | EMBL Australia
When Dr Richard Jacoby arrived at Monash University in August as part of EMBL’s ARISE fellowship program, he hoped to deepen his technical expertise and learn more about Australia’s research infrastru...
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🌍 Grand Canyon rocks preserve clues to Earth–Moon history from ~1.2 billion years ago. Sedimentary rhythms help reconstruct ancient orbital cycles, though interpretations are model-dependent. doi.org/10.1038/s415... #EarthScience #Education
doi.org
Earth–Moon and Solar System history recorded in Mesoproterozoic Grand Canyon strata - Nature Geoscience
Cyclostratigraphic analysis of a ~1.2 billion-year-old rhythmically bedded mudstone formation in the Grand Canyon shows that the frequency and amplitude of Milanković cycles were markedly different th...
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🔬 In mouse lung tumours, two dendritic-cell subsets cooperate to build tissue-resident-memory-like CD8 T cells: DC2s favour differentiation; DC1s support expansion. doi.org/10.1038/s414... #Immunology #DCs
doi.org
Distinct migratory dendritic cell subsets cooperate to prime tissue-resident memory-like CD8⁺ T cells in mouse tumors - Nature Communications
Tissue-resident memory (TRM) CD8+ T cells in the tumor microenvironment are relevant for anti-tumor immunity and immune checkpoint blockade response. Here, the authors conditionally ablate type 1 and ...
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🧬 CAR design includes its promoter. In 87 myeloma patients, cilta-cel tracked with a GZMK+ state; mouse experiments implicated EF1α in expansion and tumour control. Human comparison was non-randomised. doi.org/10.1038/s414... #CART
doi.org
The EF1α promoter of cilta-cel drives a highly effective GZMK+ transcriptional program - Nature Communications
Chimaeric antigen receptors (CAR) approved for the treatment of multiple myeloma have been reported to have different therapeutic efficacies. In this study, the authors demonstrate that this differenc...
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🔬 VLab4Mic explores this in silico, connecting molecular models with super-resolution experiment design. #Microscopy #SuperResolution #VLab4Mic @aiopticalbiolab.bsky.social
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🧬 Which solid tumours should NK cell therapies target? Tissue analysis, a review of 177 trials and >10,000 TCGA samples offer a framework for prioritisation @ericvivier.bsky.social pmc.ncbi.nlm.nih.gov/articles/PMC... #NKcells #Immunotherapy
pmc.ncbi.nlm.nih.gov
A Multimodal Framework to Guide Solid Tumor Indications for Natural Killer Cell‐Based Therapy
T cell‐based immunotherapies have achieved remarkable success in hematological malignancies but remain limited in solid tumors. Natural killer (NK) cells offer a compelling complementary approach, giv...
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🔬 Funding projects is not the same as sustaining science. A. Nelson and L. Cameron discuss why shared infrastructure and long-term support matter alongside digital fundraising. doi.org/10.1126/scie... "The wrong platform for science" #SciencePolicy #ResearchFunding
doi.org
The wrong platform for science
Daniel Blumstein recently sat in a Colorado meadow waiting for yellow-bellied marmots to appear, as the ecologist and evolutionary biologist had done many times before, the New York Times reported. Bu...
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🔬 MSCA Postdoctoral Fellowships 2026: a record 21,627 applications, with around 1,600 projects expected to be funded. Results are due in February 2027. Official announcement marie-sklodowska-curie-actions.ec.europa.eu/whats-new/ne... #MSCA #ResearchFunding
marie-sklodowska-curie-actions.ec.europa.eu
MSCA Postdoctoral Fellowships 2026 receives record number of applications
The 2026 call has attracted considerable interest from the research community with 21,627 applications submitted.
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David Tomaz, PhD @dctomaz.bsky.social · 21/09/2026
🧬 Tissue repair is essential—but what happens when it doesn’t switch off? An interesting perspective on how persistent inflammation and repair programmes contribute to fibrosis, and where we might intervene. #Immunology #Fibrosis
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David Tomaz, PhD @dctomaz.bsky.social · 20/09/2026
🔬 From 9 Sep: membrane order distinguished NK-cell states with different migration and killing capacity in vitro. A useful state marker, not proof that changing membrane order improves therapy. doi.org/10.1038/s415... #NKCells
doi.org
Plasma membrane order maps functional diversity in immune cells - Nature Chemical Biology
Cells undergo membrane remodeling in response to the environment to perform specific functions. Now, a cytometry-based method with immune cell biomarker analysis captures variations in plasma membrane...
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David Tomaz, PhD @dctomaz.bsky.social · 20/09/2026
🧬 A lovely way to discover fellow immunologists and connect with the community here. Thanks, @rodrahimi.bsky.social , for putting these starter packs together! #Immunology
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David Tomaz, PhD @dctomaz.bsky.social · 20/09/2026
🧬 T-cell gene switches can follow cellular state: a new promoter toolkit showed reversible responses in preclinical models. Clinical benefit remains untested. doi.org/10.1038/s414... #Immunology #Tcells
doi.org
A modular synthetic promoter toolkit for programmable gene control in activated and chronically stimulated T cells - Nature Communications
Achieving programmable gene regulation remains a challenge for engineering T cells. Here the authors characterize a library of synthetic promoters, responsive to seven endogenous T cell transcription ...
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David Tomaz, PhD @dctomaz.bsky.social · 20/09/2026
🔬 What happens when a cell is squeezed? CFM combines controlled compression, live imaging and force measurements to track adaptation. Tested mainly in cultured cells. doi.org/10.1038/s415... #CellBiology
doi.org
CFM: confinement force microscopy—a dynamic, precise and stable microconfiner for traction force microscopy in spatial confinement - Nature Methods
CFM enables tunable cell confinement for measuring traction forces exerted by single cells and cell aggregates in tissue-mimicking microenvironments.
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David Tomaz, PhD @dctomaz.bsky.social · 20/09/2026
🌳 Protecting existing Amazon forests from clearing, logging and fire can outperform restoration alone for biodiversity and carbon per cost. Combined approaches performed best in this study. doi.org/10.1126/scie... #Biodiversity
doi.org
Protecting tropical forests is more cost-effective for biodiversity and climate than restoration
Halting deforestation and promoting restoration are at the core of strategies to confront the biodiversity and climate crises in tropical forests. Avoiding forest disturbances is also critically impor...
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David Tomaz, PhD @dctomaz.bsky.social · 18/09/2026
🧫 mRNA-encoded T cell engagers showed promising results in patients with refractory ITP. A potentially safer option for B-cell-driven autoimmunity, but larger studies are needed. #Immunology #mRNA www.cell.com/cell/fulltex...
cell.com
mRNA-encoding CD19-targeting T cell engager for refractory immune thrombocytopenia
An mRNA-lipid nanoparticle-encoded CD19×CD3 T cell engager depletes B cells with attenuated cytokine release in preclinical models. In three patients with treatment-refractory immune thrombocytopenia,...
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David Tomaz, PhD @dctomaz.bsky.social · 18/09/2026
🧬 Reported this week: VIPR offers a new way to silence genes. Promising for molecular tools—and perhaps future antiviral therapies. Early days! #VIPR #MolecularBiology The Next Gene-Editing Technology May Also Be the Oldest www.nytimes.com/2026/09/17/s...
nytimes.com
The Next Gene-Editing Technology May Also Be the Oldest
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David Tomaz, PhD @dctomaz.bsky.social · 18/09/2026
Tiny cat, big reminder of how much we still have to discover—and protect. 🐾 #Biodiversity #Conservation
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David Tomaz, PhD @dctomaz.bsky.social · 18/09/2026
🔬 It’s been a while since my little MSc project on VLPs, but watching them assemble in real time is exciting! I still think there’s much more to explore in their potential as antigen-display platforms. www.nature.com/articles/d41... #VLPs #Immunology #virus @nature.com
nature.com
Virus-like particles observed assembling in real time
Scientists have long dreamt of being able to track and analyse each step in the assembly of a virus’s protein shell. An ingenious experiment shows how this can be done.
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David Tomaz, PhD @dctomaz.bsky.social · 16/09/2026
🌊 Preliminary NOAA OISST data show Niño 3.4 setting records for 108 consecutive calendar days—far more than a one-day spike. Daily values alone don’t define El Niño strength, but this persistence is remarkable and worth watching closely. 🌡️ #ElNiño #Climate #OceanScience
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David Tomaz, PhD @dctomaz.bsky.social · 15/09/2026
🦠 Small microbes, big questions. GIMM Festival brings science and society together in Lisbon, 17–19 September, to explore the microbial world—with a public day on the 19th. 📍 Pavilhão de Portugal fest.gimm.pt/pt-pt/ #Microbiology #Science #GIMMFestival
fest.gimm.pt
GIMM Festival 2026 Microbes – Questions of the Future
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David Tomaz, PhD @dctomaz.bsky.social · 15/09/2026
🔭 A little cosmic perspective for the timeline. 🌌 The universe has a remarkable eye for colour. ✨ #Astronomy #Space #Nebula #JWST #Science
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David Tomaz, PhD @dctomaz.bsky.social · 15/09/2026
Congratulations to The Pitt on its Emmy for Best Drama Series! 🏆 I love this show—the hospital setting feels so real, and the attention to medical detail makes it even more compelling. Such a well-deserved win. #ThePitt #Emmys www.bbc.com/news/article...
bbc.com
The Pitt is up for 25 Emmys - but the show's biggest fans are real-life doctors
Those in the medical profession say the HBO Max show about a US hospital emergency room is the most realistic medical drama yet.
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David Tomaz, PhD @dctomaz.bsky.social · 14/09/2026
🔬 Watching living cells without an excitation laser? A Nature study combines reaction-generated light with computational reconstruction, achieving ~100 nm resolution and 41 hours of live-cell imaging. doi.org/10.1038/s415... #Microscopy #CellBiology
doi.org
Luminescent-reaction-enabled super-resolution imaging - Nature
A new chemistry-based super-resolution imaging framework is described, enabling 3D, laser-free, highly sensitive and ultralong-term imaging of live cells which overcomes the limitations in spatiotempo...
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David Tomaz, PhD @dctomaz.bsky.social · 13/09/2026
AI is advancing rapidly, but so are the risks. Oversight and regulation need to keep pace with the technology. 🤖 #AI #ArtificialIntelligence #AISafety #AIRegulation #AIGovernance #Technology
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David Tomaz, PhD @dctomaz.bsky.social · 13/09/2026
100 consecutive days of record global sea-surface temperatures — another clear sign of how rapidly our oceans are warming 🌡️🌊 #ClimateChange #OceanWarming #ClimateScience #GlobalWarming #Oceans
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David Tomaz, PhD @dctomaz.bsky.social · 10/09/2026
🧬 Antibodies don't just block. They can switch things on — and that agonistic potential is where the next wave of patient benefit can possibly be. Cragg, Yu, Paluch & Simon Davis on how to get there. doi.org/10.1038/s41573-026-01442-2 #Immunology #Immunotherapy #AntibodyEngineering #Biotech
doi.org
Realizing the potential of agonistic antibody immunotherapy - Nature Reviews Drug Discovery
Agonistic antibodies initiate signalling by the receptors they target, mimicking the activities of native ligands. This Review discusses the clinical successes and failures of agonistic antibodies and...
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