Understanding the Mouse Olfactory Bulb's Role in Guiding Neuron Axons
Author Information
Author(s): Eric O. Williams, Yuanyuan Xiao, Heather M. Sickles, Paul Shafer, Yona Golan, Jean YH Yang, David M. Lin
Primary Institution: Cornell University
Hypothesis
The cells within the external plexiform and glomerular layers of the olfactory bulb express different guidance cues that are important for targeting olfactory sensory neuron axons.
Conclusion
The study identifies multiple domains in the olfactory bulb based on gene expression, suggesting these genes may guide olfactory sensory neuron axons during targeting.
Supporting Evidence
- The expression patterns of genes divide the olfactory bulb into previously unrecognized subdomains.
- Some genes are symmetrically expressed along the medial-lateral axis of the bulb.
- The study shows that the nascent external plexiform and glomerular layers express genes important for axon guidance.
Takeaway
Scientists studied the mouse brain to see how certain cells help guide smell neurons to the right places, finding that these cells have different jobs based on the genes they use.
Methodology
The researchers used laser microdissection and microarray analysis to identify genes expressed in different regions of the olfactory bulb.
Digital Object Identifier (DOI)
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