title: Concurrent antibody rises to C psittaci and L pneumophila in a patient with psittacosis.
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis*; D006801:Humans; D007875:Legionella / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D009956:Psittacosis / Q000276:immunology*; D012698:Serologic Tests
chemical_list: D000907:Antibodies, Bacterial