organogenesis is governed by a cascade of morphogenetic interactions between these cell populations , a reciprocal epithelial-mesenchymal interaction between the branching ureter and the metanephric mesenchyme , homotypic interactions between cells of the tubular anlagen , stimulation of angiogenesis by the differentiating blastema and a mesenchymal -- endothelial interaction guiding the migration of the capillary endothelial cells .
C0007634
cell
C1622501
the migration