879489.fig.001a
(a)
879489.fig.001b
(b)
879489.fig.001c
(c)
879489.fig.001d
(d)
879489.fig.001e
(e)
879489.fig.001f
(f)
879489.fig.001g
(g)
879489.fig.001h
(h)
879489.fig.001i
(i)
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).