Figure 3From: EGF increases expression and activity of PAs in preimplantation rat embryos and their implantation rateActivity of uPA in preimplantation embryos developed in-vitro with and without the presence of EGF in the medium (A). Activity of tPA in preimplantation embryos developed in-vitro with and without the presence of EGF in the medium (B). Means ± SEM. Different letters above the columns represent significant differences (ANOVA followed by LSD test, P < 0.01).Back to article page