From: Studies of the role of steroid hormone in the regulation of oocyte maturation in cattle
 |  | Cumulus expansion (%) | |||
---|---|---|---|---|---|
Concentration of P4 (ng/ml) | Number of Oocytes examined | 0 | +1 | +2 | +3 |
Control | 100 | 0a | 19.2 ± 6.0 | 20.1 ± 4.9c | 60.7 ± 7.7e |
0 | 110 | 84.9 ± 5.5b | 15.1 ± 5.5 | 0d | 0f |
100 | 105 | 90.2 ± 3.5b | 9.8 ± 3.5 | 0d | 0f |
500 | 115 | 87.5 ± 1.2b | 12.5 ± 1.2 | 0d | 0f |
1000 | 145 | 89.5 ± 1.3b | 10.5 ± 1.3 | 0d | 0f |