since the intermediate haemoglobins such as ( alpha 2+ beta 3+ ) 2 and ( alpha 3+ beta 2+ ) 2 were found to be produced by the oxidation of haemoglobin by nitrite , the changes in oxyhaemoglobin , intermediate haemoglobins and methaemoglobin during the reaction were followed by isoelectric-focusing electrophoresis .
C0019046
haemoglobins
C0025635
methaemoglobin