Peptides, Cyclic [Chemical/Ingredient] Cyclosporins [Chemical/Ingredient] D003524 C26166 N0000007903 M0005493 Cyclosporins Cyclosporins C0010594 3009 A group of closely related cyclic undecapeptides from the fungi Trichoderma polysporum and Cylindocarpon lucidum. They have some antineoplastic and antifungal action and significant immunosuppressive effects. Cyclosporins have been proposed as adjuvants in tissue and organ transplantation to suppress graft rejection. Cyclosporines