[Manifestations of blood vessel growth in embryogenesis and reparative regeneration]

Four types of blood vessel growths are established: a) autochtonous linked with the formation of protocapillaries from vasoformative mesenchymal cells; 2) loop-like, characterized by a vascular loop proliferation (loop from loop mechanism); c) formation of single vessels from separated growth cambial elements resulting in the link of two functioning vascular ferminals (microvessel from microvessel mechanism); d) formation of vessels-satellites associated with the anastomosis between growth germs with the microvessels from which they are being separated. All the above types of vasculogenesis are manifested in the prenatal ontogenesis, while in reparative regeneration two last types only. Sources of endothelial germ formation are described, the dynamics of transformation of newly formed capillaries into the arterioles and venules, arteries and veins are studied, materials on the reparative vasculogenesis pathology are presented.