complement receptor

This term is a specialized technical expression used primarily in immunology and molecular biology. It describes a specific protein interface where the innate immune system's complement proteins interact with cellular membranes to initiate processes like phagocytosis or chemotaxis.

In a clinical or research context, the term is typically used to discuss the mechanism of pathogen clearance or the regulation of inflammation. It is distinct from general cell receptors in that its ligands are specifically the fragmented or intact proteins of the complement cascade, such as C3b or C5a.