Anatomical pattern of the umbilical artery (round lig. of the urinary bladder) and urogenital artery in the guinea pig (Cavia porcellus, L., 1756). Rev. Fac. Med. Vet. Zootec. 1981;18(1):15-17. doi:10.11606/issn.2318-3659.v18i1p15-17