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Fig. 5. Oocyte wet mass (WM)/`initial control' (IC) wet mass (WM0) ratio
after a 60 h in vitro incubation. Follicle-enclosed oocytes were
incubated in the presence of different steroids:
17,20ß-dihydroxy-4-pregnen-3-one (MIS40; 40 ng ml1);
cortisol (5, 12 or 50 ng ml1); 11-deoxycorticosterone (DOC,
5, 12 or 50 ng ml1); cortisol (5, 12 or 50 ng
ml1)+MIS40; DOC (5, 12 or 50 ng
ml1)+MIS40. IC, initial control; ethanol vehicle was used as
the negative control (NC). Values are means ± s.d. (N=5).
Asterisks indicate significantly different from NC. Triangles indicate
significantly different from MIS40 value (P<0.05). The percentage
of germinal vesicle breakdown (GVBD) after 60-h incubation is shown below for
each group.