title: Crystalloid material in marrow macrophages of specific pathogen-free mice.
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D005856:Germ-Free Life; D002479:Inclusion Bodies; D008264:Macrophages / Q000166:cytology*; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D008854:Microscopy, Electron