system of macrophages

English Thesaurus

1. a widely distributed system of free and fixed macrophages derived from bone marrow (noun.body)

hypernym	:	system,
definition	:	a group of physiologically or anatomically related organs or parts (noun.body)

part meronym	:	res, reticuloendothelial system,
definition	:	a widely distributed system consisting of all the cells able to ingest bacteria or colloidal particles etc, except for certain white blood cells (noun.body)