“Effect of Retinoic Acid on the Nitrergic Innervation of Meibomian Glands in Rats”. European Journal of Histochemistry 56, no. 4 (November 30, 2012): e50. Accessed June 21, 2025. https://www.ejh.it/ejh/article/view/ejh.2012.e50.