Cetin, A., F. Ozturk, M. Gul, M. Esrefoglu, and A. Otlu. “The Histology of Digestive and Respiratory System Macrophages in Rats”. Annals of Medical Research, vol. 15, no. 4, May 2021, pp. 0225-31, http://www.annalsmedres.org/index.php/aomr/article/view/3295.