Simulation of the branching process in 2 dimensions, e.g. in the mammary gland. Red denotes the tips that are still actively proliferating. Disclaimer: AAAS and EurekAlert! are not responsible for the ...

The tracheal system of Drosophila melanogaster is one of the best characterized multicellular branched organs. Branchless (BNL), a fibroblast growth factor (FGF) ligand, initiates the branching ...