Albani, D, L Giorgetti, L Pitto, M Luo, and RM Cantoni. “Proliferation-Dependent Pattern of Expression of a Dihydrofolate Reductase-Thymidylate Synthase Gene from Daucus Carota”. European Journal of Histochemistry 49, no. 2 (June 29, 2009): 107-116. Accessed July 10, 2020. https://ejh.it/index.php/ejh/article/view/934.