“Histopathological Changes of the Small Intestine Using a Standard Dose of Copper Sulfate in Rats (feed Supplement Dose)”. Tikrit Journal of Veterinary Science 5, no. 1 (June 30, 2026): 27–35. Accessed July 21, 2026. https://tjvs.tu.edu.iq/index.php/tjvs/article/view/159.