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12h ago
First-of-its-kind map of the mouse nose reveals surprises about the sense of smell
- A comprehensive map of mouse smell receptors shows organized, banded patterns rather than random distribution.
- Researchers catalog 1,172 odor receptor types across about 1,100 olfactory neurons in mice.
- Single-cell sequencing and spatial transcriptomics linked nose receptors to brain maps in the olfactory bulb.
- Retinoic acid may guide neuron placement and receptor expression according to the study.
- The work aligns nose receptor maps with brain maps in the olfactory bulb, suggesting coordinated organization.
- The findings elevate our understanding of scent processing and may inform treatments for smell loss.
- Researchers describe the map as a 'beautiful map' of over 1,100 smell receptors in the nose.
- The study examined multiple lab mice and found consistent receptor positions across specimens.
- The research uses advanced methods to explore how genes are active in nose cells and how this relates to smell.
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