Figure 8From: Techniques for analysing pattern formation in populations of stem cells and their progenyPathways of diffusive and juxtacrine signalling. (a) In diffusive signalling, cells of type R (G) generate morphogens a (b) which diffuse in space and influence other cells through a signal B n diff which biases subsequent differentiation. (b) In juxtacrine signalling, cells of type R (G) force a signal B n just which acts on neighbouring cells.Back to article page