Exhausting waste gases.
Pickles
J
J
D000766:Anesthesia, Dental / Q000295:instrumentation*; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D015920:Gas Scavengers; D006801:Humans; D009609:Nitrous Oxide; D006113:United Kingdom
D009609:Nitrous Oxide