Evaluation of cell proliferation and endometrial thickness of bitches in different periods of diestrus oleh VANESSA S.A. GOSSLER, FRANCISLAINE A.G. SANTOS, ALINE R. DE AZEVEDO, PRISCILA C. GONÇALVES, HUGO A. RIGOLO, CLEONICE TREVISAN, ANA PAULA B. MASSENO, ANA PAULA M.M. CARDOSO, PAULA C. PAPA, CALIÊ CASTILHO, INES C. GIOMETTI