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Cathepsin B in porcine GV stage oocytes of good and poor quality. (A) Cathepsin B expression was measured by RT-qPCR. (B) Cathepsin B was localized in the cytoplasm in both good and poor quality oocytes. (C) High cathepsin B activity was observed in GV stage oocytes of poor quality. Values represent the means ± SEMs of three independent experiments.
