A fruit fly's misguided neurons provide a fascinating look at the evolution of systems that detect carbon dioxide.
Researchers have demonstrated how tens of thousands of closely related proteins establish the specificity that allows them to serve as identification tags for individual neurons.
Researchers have found that a much-studied gene provides branches of nerve cells the ability to recognize one another and grow apart, helping them cover as much space as they can evenly and efficiently.
HHMI researchers identify an enzyme that strips off a tag that marks protein for destruction.
Newly identified axon guidance receptor may exist in more than 38,000 different forms.