EFFECT OF CALENDULA OFFICINALIS HYDROALCOHOLIC EXTRACT ON SERUM LEVELS OF TNF-Α, GLUCOSE, AND LEPTIN IN TYPE 1 DIABETIC MALE RATS Journal title: International journal of ecosystems and ecology science (IJEES) Authors: Amir Hossein Tahmassian1, Ali Barzegar, Parviz Shahabi , Arshad Ghaffari-nasab3 Subject(s):