Characterization of the Zona Pellucida in Canine Embryos Using Schiff Periodic Acid (PAS) - Pagnano Derussi, Ana Augusta [UNESP]; Cesario, Maria Dalva [UNESP]; Chirinea, Viviane Helena [UNESP]; Landim-Alvarenga, Fernanda da Cruz [UNESP]; Lopes, Maria Denise [UNESP] (Soc Study Reproduction, 2010)