Ultrastructure of spermatogenesis in Spix's yellow-toothed cavy (Galea spixii) - Santos, Paulo Ramos da Silva; Oliveira, Moacir Franco de; Arroyo, Maria Angélica Machado; Silva, Alexandre Rodrigues; Rici, Rose Eli Grassi; Miglino, Maria Angélica; Assis Neto, Antonio Chaves de (Reproduction, 2013)