Source:http://linkedlifedata.com/resource/umls/id/C0729218
CSP: complex, lipid-soluble, macrocyclic lactone produced by the Japanese soil bacterium Streptomyces tsukubaensis; experimental immunosuppressant which inhibits T-lymphocyte activation and fungal growth by binding to peptidyl prolyl isomerase, forming a complex which interferes with calcium signaling.