complement reaction

https://doi.org/10.1351/goldbook.13031
Physiological reaction to the presence of a foreign microorganism in which a cascade of enzymatic reactions, triggered by molecular features of the microorganism, result in lysis or phagocytosis of the foreign material.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1147 [Terms] [Paper]