An atypical clinicopathological manifestation of fowl poxvirus associated with reticuloendotheliosis virus in commercial laying hen flocks in Brazil - Chacón, Ruy D; Astolfi-Ferreira, Claudete Serraro; De La Torre, David I; Sá, Lilian Rose Marques de; Ferreira, Antonio José Piantino (Transboundary and Emerging Diseases, 2020)