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Hemocyanin --> haemocyanin

(Science: chemical) blue, oxygen transporting, copper containing protein found in the blood of molluscs and crustacea.

a very large protein with 20-40 subunits and molecular weight of 2-8 million and having a characteristic cuboidal appearance under the electron microscope. Prior to the introduction of immunogold techniques, it was used for electron microscopic localisation by coupling to antibody.