title: Is there retention or production of nitrogen or other gases except O2 and CO2 in human steady-state conditions?
mesh_terms: D000818:Animals; D002151:Calorimetry; D002245:Carbon Dioxide / Q000378:metabolism; D005215:Fasting; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D051379:Mice; D009584:Nitrogen / Q000378:metabolism*; D010101:Oxygen Consumption; D011506:Proteins / Q000378:metabolism*
chemical_list: D011506:Proteins; D002245:Carbon Dioxide; D009584:Nitrogen