we report for the first time that oocyte nuclear and cytoplasmic maturation are triggered in vitro in non-hormone-treated amphibian ( rana pipiens ) ovarian follicles following transient exposure to synthetic chymotrypsin inhibitor n alpha-tosyl-l-phenylalanine-chloromethyl ketone ( tpck ) .
C0029045
oocyte
C0018120
ovarian