On day 320 of #LMB365 we have a picture by Katja Röper in the Cell Biology Division. This image shows a confocal image of the forming tube of the salivary glands in a Drosophila embryo, a model system for the formation of tubular organs. Tube cells are in green, and this forming tube is aberrant and forked due to a specific genetic mutation affecting tube formation. The Röper lab studies how important tubular organs from flies to humans form during development.