Spermatogonial stem cell potential of CXCR4-positive cells from prepubertal bull testes - Goissis, Marcelo Demarchi; Giassetti, Mariana I; Worst, Robinson A; Mendes, Camilla Mota; Moreira, Pedro V; Assumpção, Mayra Elena Ortiz D'Ávila; Visintin, Jose Antonio (Animal Reproduction Science, 2018)