Referencias:
Ross, H. M, Pawlina, W. (2011). Histology: A Text and Atlas with Correlated Cell and Molecular Biology (8th ed., pp. 232-252). Philadelphia, PA: Lippincott Williams & Wilkins.
Mescher, A. L. (2013). Junquiera’s Basic Histology (13th ed.). New York, NY: McGraw-Hill Education