Mononuclear phagocyte system, MPS, system of macrophages - a greatly distributed system of totally free and fixed macrophages derived from bone marrow something which transpires or is considered to be occurring; an incidence, In particular considered one of some value. use/​employ language/​imagery/​humour/(US English) humor/​an image/​a symbol/​a metaphor/​a device nine [countable] https://xn--939au0g6rj1ue34n9rrf5c.online/about/