Microscopy of the umbilical cord of rock cavies—Kerodon rupestris Wied, 1820 (Rodenta, Caviidae) - Rodrigues, Marcio Nogueira; Oliveira, Gleidson Benevides de; Paula, Valéria Veras de; Silva, Alexandre Rodrigues; Assis Neto, Antonio Chaves de; Miglino, Maria Angélica; Oliveira, Moacir Franco de (Microscopy Research and Technique, 2013)