title: Fixed sheep red blood cells as an in vivo reticuloendothelial system test particle in rats.
mesh_terms: D000818:Animals; D004912:Erythrocytes / Q000276:immunology*; D007163:Immunosorbent Techniques; D012157:Mononuclear Phagocyte System / Q000276:immunology*; D051381:Rats; D012756:Sheep / Q000097:blood