During development, cell differentiation frequently occurs upon signaling from gradients of molecules, called morphogens. A simple paradigm to study morphogens

Developmental pattern formation is orchestrated by diffusible signaling molecules, termed morphogens, that form gradients from which cells can determine positio

Gradients and Tissue Patterning, Volume 137 in the Current Topics in Developmental Biology series, highlights new advances in the field, with this new volume pr

Signalling by morphogens such as the Hedgehog family, Notch, Wingless/Wnt and various growth factors is essential during embryogenesis. The establishment of con