Morphological characterization of the progenitor blood cells in canine and feline umbilical cord - Brolio, Marina Pandolphi; Vidane, Atanásio Serafim; Zomer, Helena Debiazi; Wenceslau, Cristiane Valverde; Ozório, Juliana J.; Martins, Daniele dos Santos; Miglino, Maria Angélica; Ambrósio, Carlos Eduardo (Microscopy Research and Technique, 2012)