The central nervous system of a larval vinegar fly, Drosophila Melanogaster, is the subject of day 28 of #LMB365. In this image, by Alex Bates in the group of Greg Jefferis in the Neurobiology Division, the larva is expressing a green fluorescent protein in its newly formed neurons, highlighting tracts in which bundles of neurons project together. Tracts can be used as landmarks, by which different neurons and brain regions can be identified