Fig. 5From: Feedback control in planarian stem cell systemsThe temporal pattern of size, total mortality of differentiated cells, total mortality of differentiated cells, and fraction of neoblasts under growth, degrowth, and regrowth for a situation in which the planarian starts in an environment with Y e =450 at 20 % of its steady state size. For simplicity of presentation, we scale time and divide all times in the model by 10,000 for presentation in figures. At scaled time t= 7 food is dropped to Y e =400 and then at scaled time t=14 increased to Y e =480. Even in the absence of a resource constraint, the cell population dynamics show a dependence upon the level of food in the environment. This is due to the feedback control on the activity of neoblastsBack to article page