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Effect of a 28-day treatment with PS on mammary gland (100×, haematoxylin-eosin) showing the differentiation in Ovx rats. At = adipose tissue; Es = eosinophilic secretion; Ca = cell layer of the acinus. (a) SHAM + H2O. (b) Ovx + H2O. (c) Ovx + E2V. (d) Ovx + PS 100. (e) Ovx + PS 200. (f) Ovx + PS 300.
