Drosophila Melanogaster is a key model organism used across the LMB to study fundamental aspects of biology. This image for day 142 of #LMB365 shows a Drosophila head imaged by Scanning Electron Microscopy (SEM) taken by Emmanuel Derivery in the LMB’s Cell Biology Division. Fly hairs, which are actually mechanosensory organs, are a well-established system to study cell fate determination following asymmetric cell division, and as such help our understanding of asymmetric cell fate determination during stem cell division in humans.