Differential Inactivation of Maturation-Promoting Factor and Mitogen-Activated Protein Kinase Following Parthenogenetic Activation of Bovine Oocytes1

Abstract
Bovine oocytes matured for 24 h (young) or 40 h (aged) were treated with calcium ionophore (A23187) alone or followed with 6-dimethylaminopurine (6-D