Cover legend: This image shows cre recombinase-expressing tyrosine hydroxylase neurons in the hypothalamic arcuate nucleus that synthesize the optogenetic channelrhodopsin-like ChIEF with a red fluorescent reporter. Optogenetic stimulation of these cells evoked GABA-mediated IPSCs in nearby neurons, indicating that they not only project to the median eminence to release dopamine to inhibit prolactin secretion, but also project to other hypothalamic neurons. For more information, see the article Zhang and van den Pol (pages 14966–14982).