taking into account certain morpho-functional peculiarities of endothelial cells along the course of the growing capillaries , on the 8th day of growth three zone are distinguished : 1 -- area of nondifferentiated endothelium ( apex of the capillary ) , 2 -- transitional zone , 3 -- zone of relatively differentiated endothelium situating in the place where the capillary gets off the parental vessel .
C0225336
endothelial cells
C0014257
endothelium