title: Hazard report. Asphyxiation hazards when using anoxic cryogens.
mesh_terms: D000062:Accidents, Occupational / Q000517:prevention & control; D001237:Asphyxia / Q000209:etiology* / Q000517:prevention & control*; D015925:Cryopreservation / Q000295:instrumentation*; D003452:Cryosurgery / Q000295:instrumentation*; D004869:Equipment Safety / Q000592:standards; D005740:Gases / Q000009:adverse effects*; D006371:Helium / Q000009:adverse effects; D006801:Humans; D000860:Hypoxia / Q000150:complications / Q000517:prevention & control; D009584:Nitrogen / Q000009:adverse effects
chemical_list: D005740:Gases; D006371:Helium; D009584:Nitrogen