Standardization of the staging of the ontogenesis of humans and some mammals.

Abstract

Modern research in such fields as regenerative medicine, bioengineering and xenotransplantation requires deepening of knowledge of comparative embryology, histology, anatomy, etc. Standardization of research and their adequate comparison among themselves is a necessary condition for the possibility of integrating the results into the development of new branches of science. The aim the study. The methodology of embryo development staging uses the segmentation of ontogenesis into successive stages, which are represented by temporal clusters with certain morphological transformations. Standardization in comparative morphology using segmentation into clusters of stages can be complicated by polymorphism and interspecific ontogenetic features. Analyzing morphological studies, scientists note the variability of embryonic features for each stage. Therefore, in the publications, you can find inconsistency of morphometric indicators for each stage.