It seems that concentration gradients of morphogens outside a cell ... cascade—the first step of which is the cell "seeing" the morphogen by binding to it on the surface, and the final step ...

Retinoic acid (RA) is one of several molecules that pattern vertebrate embryos by forming an anterior to posterior (A–P) concentration gradient. The issue of whether RA is a classical morphogen ...

The AADR/CADR Annual Meeting is in Fort Lauderdale, Fla., from March 21-24, 2018. Engineered 3D morphogen gradients in hydrogels can direct human salivary gland stem/progenitor cell (hS/PC) ...