Bovine cloning: fetal and adult fibroblasts as nuclei donor source - Mello, Marco; Marques, Mariana; Caetano, Heloisa; Padilha, Marcelo; Nascimento, Anibal; Assumpção, Mayra Elena Ortiz D'Ávila; Visintin, Jose Antonio (Congress of the Brazilian Society for Cell Biology, 2004)