Diffusion dynamics play an essential role in regulating stem cells and tissue development

Gradients of molecular signaling factors play an essential role in numerous events in embryonic development, from patterning limb and organ formation to the intricate shaping of the brain and neuroanatomical architecture. These gradients are a consequence of diffusion dynamics in tissues, and newly published work describes two vital aspects of these diffusion processes in tissue development—first, the influence of molecular diffusion gradients on stem cell signaling pathways is described i