Effects of melatonin on histomorphology and on the expression of steroid receptors, VEGF, and PCNA in ovaries of pinealectomized female rats - Romeu, Lucrecia Regina G; Motta, Eduardo Leme A. da; Maganhin, Carla C; Oshima, Celina T. F; Fonseca, Marcelle C; Barrueco, Karina F; Simões, Ricardo Santos; Pellegrino, Renata; Baracat, Edmund Chada; Soares Junior, José M (Fertility and sterility, 2011)