title: The respiratory stimulating effect of 'tube breathing' simulated without a tube.
mesh_terms: D001274:Atmospheric Pressure; D002245:Carbon Dioxide; D006801:Humans; D006935:Hypercapnia / Q000503:physiopathology*; D000860:Hypoxia / Q000503:physiopathology*; D010100:Oxygen; D012119:Respiration; D013997:Time Factors
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen