As the gradient decays, the position of this threshold value moves at varying speed along the membrane, depending on the cell shape. Thus, via this hierarchy of protein concentration profiles, the ...

Morphogens are signaling molecules that are released from particular areas of tissues, creating a concentration gradient that decreases in concentration further away from the source. This has ...

Molecular gradients have been established as a key driving force for cellular organization in the formation of early structures during embryonic development. A new live imaging technique has been ...