Carvalho, F. de S. R., Miglino, M. A., Severino, R. S., Ferreira, F. A., & Santos, T. C. dos. (2001). Morphological features of the umbilical cord in equine (Equus caballus, Linnaeus, 1758). Brazilian Journal of Veterinary Research and Animal Science, 38(5), 214-219. https://doi.org/10.1590/S1413-95962001000500003