[A phospholipid from the platelet membrane that contributes to the blood clotting cascade by forming a phospholipid-protein complex (THROMBOPLASTIN) which serves as a cofactor with FACTOR VIIA to activate FACTOR X in the extrinsic pathway of BLOOD COAGULATION. ( MSH )]
UMLS (CSP) C0032182 - Amino Acid, Peptide, or Protein
- Biologically Active Substance