title: [2 unusual cases of early embryogenesis].
abstract: Two unusual cases of early embryogenesis are described: a giant cleaving egg and the presence of two generations of embryos in the genital tract of a female--at the stage of implantation and at the stage of two blastomeres. The ability of development of the second generation was tested in vitro experiments.
mesh_terms: D000818:Animals; D001756:Blastoderm / Q000502:physiology; D002454:Cell Differentiation; D046508:Culture Techniques; D010064:Embryo Implantation; D004627:Embryonic Induction; D005260:Female; D051379:Mice; D011247:Pregnancy; D013997:Time Factors
vernacular_title: Dva neobychnykh sluchaia rannego émbriogeneza.