Comment on the finding of Ia expression in nonlymphoid cells.
D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D006801:Humans; D007371:Interferon-gamma / Q000276:immunology*; D008264:Macrophages / Q000276:immunology
D000949:Histocompatibility Antigens Class II; D007371:Interferon-gamma