Tough aged meat presents greater expression of calpastatin, which presents postmortem protein profile and tenderization related to Nellore steer temperament - Souza, Giancarlo de Moura; Coutinho, Marcelo Aranda da Silva; Ramos, Patricia Maloso; Oliveira, Giuliana Micai de; Lonergan, Steven Michael; Delgado, Eduardo Francisquine (Meat Science, 2019)