
Keywords: گاو; AA; arachidonic acid; Act D; actinomycin D; DDE; dichlorodiphenyldichloroethylene; DDT; dichlorodiphenyltrichloroethane; E2; estradiol; KRS; Krebs-Ringer's solution; MTT; tetrazolium salt; NP-I/OT; neurophysin-I/OT; OT; oxytocin; P4; progesterone; PCBs; p