Gene Expression Profiling of Human Oocytes Developed and Matured In Vivo or In Vitro

Figure 1

Human oocytes from the in vitro fertilization programme (a)–(c): immature germinal vesicle (GV) oocytes with a germinal vesicle (arrow) and without a polar body; (d)–(f): immature metaphase I (MI) oocytes without a polar body; (g)–(i): mature metaphase II (MII) oocytes with a polar body (arrow).

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