Histogenesis of myogenic recapitulation and myoblasts autonomous migration during lizard embryogenesis (Reptilia: Sauria)

Abstract

The article deals the issues of formation, recapitulation (differentiation), morphological changes of myogenic cells in lizard embryos. It has been established that the formation of somites is observed in the oviduct of females. Segmentation of the presomitic mesoderm into numerous metameric units (somites), observed in the cranio-caudal direction, along the anterior-posterior axis. During the formation of somatic muscles of trunk and limbs, 11 stages of myogenic recapitulation are distinguished. All stages of myogenic recapitulation are completed during embryogenesis. Inside the myotome myogenic progenitor cells proliferate and give rise A-type MPCs, apoptotic cells, and myoblasts. During autonomous myoblast migration by chemotaxis, apoptotic cells death