Haemoglobinometry: from estimation to reference method.
D006452:Hemoglobinometry / Q000266:history / Q000379:methods*; D049673:History, 20th Century; D008706:Methemoglobin / Q000031:analogs & derivatives; D009426:Netherlands; D009570:Nitriles; D012015:Reference Standards
D009570:Nitriles; C018958:hemiglobincyanide; D008706:Methemoglobin