Ichizawa et al. show that cats maintain durable chemical individuality in urine through donor-specific branched-chain fatty acid (BFA) profiles stabilized by renal cortical lipid droplets. This kidney...

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Patients with loss of smell completed a five-week cooking program and achieved significant improvements in both their sense of smell and quality of life.

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Job TitleLab Manager Agency Texas A&M Agrilife Research Department Animal Science Proposed Minimum SalaryCommensurate Job LocationCollege Station, Texas Job TypeStaff Job Description About Texas A...

Call for chapter proposals - The OUP Handbook of Smell We are seeking chapter proposals of The OUP Handbook of Smell. The handbook will be edited by Jessica Freiherr, Andreas Keller, Kathrin...

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AI is asbestos in the walls of our tech society, stuffed there by monopolists run amok. A serious fight against it must strike at its roots

Precise control of odorant concentration is essential for reliable olfactory research, yet existing odorant delivery methods often suffer from solvent interactions and dilution from ambient air, limiting stimulus consistency in olfactory research. We developed an odor sampling bag system using Nalophan plastic to create a closed headspace with air as the carrier medium, eliminating solvent-related variability and ambient air dilution. In two independent experiments, 15 trained panelists each rated the perceived intensity of seven concentrations of benzaldehyde and 2-heptanone using both gas-sampling bags and glass jars. Bags produced higher maximum perceptual intensities (p < 0.001) and greater test-retest reliability than jars (Experiment 1: r = 0.89 vs. 0.81, p < 0.001; Experiment 2: r = 0.86 vs. 0.72, p < 0.001). Notably, the two tested odorants showed different maximum intensities in bags (p < 0.001) but not jars (p = 0.85), suggesting bags better preserve odorant-specific concentration differences. Photoionization detector measurements confirmed stable headspace concentrations over time, comparable to industry-standard Tedlar bags. This cost-effective approach offers improved stimulus control for olfactory psychophysics research. ### Competing Interest Statement Joel D. Mainland serves on the scientific advisory board of Osmo Labs, PBC and receives compensation for these activities. National Institutes of Health, https://ror.org/01cwqze88, F32 DC020380, T32 DC000014, U19 NS112953, R01 DC017757, R01 DC021663

Urban rats are highly adaptable, thriving in the dynamic and often inhospitable conditions of modern cities. Despite substantial mitigation efforts, they remain an enduring presence in urban environme...

Chemosensory creativity, the ability to innovate using taste and smell, is a crucial yet understudied aspect of human ingenuity. This study explores t…

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'DREAM Olfactory Mixtures Prediction Challenge 2025' (Synapse ID: syn64743570) is a project on Synapse. Synapse is a platform for supporting scientific collaborations centered around shared biomed...

Stereo olfaction involves comparing odor differences between the two nostrils. Here, using neuronal recordings and a behavioral test, the authors demonstrate that blind mice use stereo olfaction to fo...

Objective Area tempestas, a functionally defined region in the anterior piriform cortex, was identified as a crucial ictogenic trigger zone in the rat brain in the 1980s. However, whether the primat...

Computer vision and machine learning approaches map a multi-scale social behavioral landscape, revealing ASD signatures and establishing an atlas of rodent sociality.

In 2021, a year before ChatGPT took the world by storm amid the excitement about generative artificial intelligence (AI), AlphaFold 2 cracked the 50-year-old protein-folding problem, predicting three-...