title: Etiological studies on natural outbreaks of pneumonia in mice.
mesh_terms: D000818:Animals; D003352:Corynebacterium / Q000302:isolation & purification; D004196:Disease Outbreaks / Q000662:veterinary*; D005260:Female; D008297:Male; D051379:Mice; D009174:Mycoplasma / Q000302:isolation & purification; D010325:Pasteurella / Q000302:isolation & purification; D011014:Pneumonia / Q000209:etiology / Q000662:veterinary*; D012376:Rodent Diseases / Q000209:etiology*