a large (phagocytic) cell in the immune (reticuloendothelial) system. This is the reconnaisance unit of the blood stream -- circulatin, looking for foreign matter, alerting (by producing neopterin) the entire immune system if there is a problem.
MACROPHAGE
Meaning of MACROPHAGE in English
AIDS English Glossary. Английский словарь СПИДа. 2012