Figure 2.

In vitro development of parthenogenetic embryos: (A) Oocyte cumulus-corona radiata complex under a phase-contrast microscope (magnification, ×200); (B) oocytes of the first polocyte following enzyme treatment (magnification, ×400); (C) ovum with 2 pronuclei (magnification, ×400); (D) 8 blastocytes (magnification, ×400); (E) blastosphere in expansion stage, (magnification, ×400); (F) blastospheres being hatched; (G) hatched blastosphere (magnification, ×400) (H) there were an increased number of segments in the zona pellucida (magnification, ×400).