TPEN treatment reduces p34^cdc2 kinase activity in porcine oocytes.

<p>p34^cdc2 kinase activity was examined in oocytes after 25 h of IVM in the absence (Ctrl, control group) or presence of TPEN, PMA, or TPEN plus PMA (T+P). Twenty oocytes were examined per group. Data are expressed as mean values ± SEM. Different letters above the bars denote statistically significant differences (P<0.05).