Transmission electron microscopy for characterization of acrosomal damage after Percoll gradient centrifugation of cryopreserved bovine spermatozoa - Oliveira, L. Z; Lima, Vera Fernanda Martins Hossepian de; Levenhagen, M. A; Santos, Ricarda Maria dos; Assumpção, T. I; Jacomini, José Octavio; Andrade, André Furugen Cesar; Arruda, Rubens Paes de; Beletti, Marcelo Emílio (Journal of Veterinary Science, 2011)