Ristocetin

**Definition:** An antibiotic mixture of two components, A and B, obtained from Nocardia lurida (or the same substance produced by any other means). It is no longer used clinically because of its toxicity. It causes platelet agglutination and blood coagulation and is used to assay those functions in vitro.

**Tree numbers:** - D09.400.420.800 - D12.644.233.697