The formation of the dorsal-ventral (DV) axis is one of the most important events during the early development of bilaterian animals. It is widely accepted that a conserved molecular logic (BMP2/4 and Chordin) regulates tissue differentiation along the DV axis.
Click here for original story, Dorsal-ventral patterning mechanism provides insights into unique developmental mode and evolution of spiralians
Source: Phys.org