title: Elimination of irritating compounds during chronic exposure to gases.
abstract: Ammonia (NH3, a degradation product of urine) and intestinal gases which accumulate in the experimental circuit during the long-term experimental exposure of rats to gases might cause disturbing irritation in the behavior of the animals. A relatively simple and cheap experimental arrangement has been suggested for the elimination of these irritating compounds. This system also guarantees the maintenance of a constant concentration of the investigated gases. In order to facilitate the comparison of the results of various studies, the standardization of the basic experimental procedure for the long-term exposure to gases has been suggested.
mesh_terms: D000641:Ammonia / Q000302:isolation & purification; D000818:Animals; D001273:Atmosphere Exposure Chambers; D002245:Carbon Dioxide / Q000302:isolation & purification; D005740:Gases / Q000302:isolation & purification*; D007509:Irritants / Q000302:isolation & purification*; D009609:Nitrous Oxide / Q000494:pharmacology; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D005740:Gases; D007509:Irritants; D002245:Carbon Dioxide; D000641:Ammonia; D009609:Nitrous Oxide