The CD system, used in Immunophenotyping, helps identify various immune cells via surface CD molecules linked to their functions. Over 320 unique CD clusters exist, with some acting as receptors or ligands that initiate signal cascades altering cell behavior, while others have roles like cell adhesion. CD36, a class B scavenger receptor, is found on many vertebrate cell types, consisting of 472 amino acids and extensive glycosylation. Primarily, it serves as a receptor for thrombospondin, collagen, and malaria-infected erythrocytes, with its role extended to signal transduction.