A fluorescent microscopy image depicting POMC neurons (green) in the arcuate nucleus of the mouse hypothalamus. ALICIA G GÓMEZ-VALADÉSInterested in reading more?The Scientist ARCHIVESBecome a Member ofReceive full access to more than 35 years of archives, as well as TS Digest, digital editions of The Scientist, feature stories, and much more!Join for free todayAlready a member?Login Here