Haque, Ayesha, and Muhammad Yunus Khan. “THE TERATOGENIC EFFECTS OF RETINOIC ACID ON EPITHELIORETICULAR CELLS AND HASSALL’S CORPUSCLES IN THE MEDULLA OF THE CHICK THYMUS: Retinoic Acid on Epithelioreticular Cells And Hassall’s Corpuscles”. Pakistan Armed Forces Medical Journal, vol. 67, no. 2, Apr. 2017, pp. 327-31, https://pafmj.org/PAFMJ/article/view/417.