Ciclosporin

Ciclosporin (INN/BAN) (pronounced /ˌsaɪkləˈspɔrɪn/), cyclosporine (USAN), cyclosporin (former BAN), or cyclosporin A is an immunosuppressant drug widely used in post-allogeneic organ transplant to reduce the activity of the immune system, and therefore the risk of organ rejection. Initially isolated from the fungus Tolypocladium inflatum isolated from a soil sample obtained by Sandoz scientists at Hardangervidda, Norway in 1969, ciclosporin is a cyclic nonribosomal peptide of 11 amino acids and contains a single D-amino acid, which are rarely encountered in nature.

This text uses material from Wikipedia, licensed under CC BY-SA