title: Retention of microspheres in the rat lung after intratracheal instillation.
mesh_terms: D000818:Animals; D005243:Feces / Q000032:analysis; D005260:Female; D007442:Intubation, Intratracheal; D008168:Lung / Q000378:metabolism*; D008297:Male; D008863:Microspheres; D010316:Particle Size; D011137:Polystyrenes / Q000378:metabolism; D011868:Radioisotopes; D051381:Rats; D011916:Rats, Inbred F344; D013997:Time Factors
chemical_list: D011137:Polystyrenes; D011868:Radioisotopes