Figure 7.

A simple multispecies birth-death-immigration (BDI) process [55, 136-138]. A constant source (i.e. stem cells with slow dynamics) generated by 16 cells, each of a different clone, undergo asymmetric differentiation with rate α to produce differentiated cells that can undergo birth or death with rates r(N) and μ(N) that may depend on the total population in the differentiated pool. In this example, the differentiated population contains N = 30 cells, R = 9 different clones (barcodes), thus leaving c₀ = 7 unseen species.