Ventilatory functions in germfree and conventional rats exposed to coal dusts.
D000818:Animals; D003031:Coal; D004391:Dust; D005856:Germ-Free Life; D011336:Probability; D051381:Rats; D012119:Respiration; D012120:Respiration Disorders / Q000209:etiology*
D003031:Coal; D004391:Dust