Also found in: Dictionary, Encyclopedia, Wikipedia.


An oxygen-carrying pigment in some mollusks, crustacea, and arthropods; contains copper rather than heme; used as an experimental antigen.
Synonym(s): haemocyanin.
[hemo- + G. kyanos, blue material, + -in]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


a respiratory pigment found in the blood plasma of many molluscs and crustaceans that performs the same function Transverse section of an insect, showing the positions of the heart, haemocoel and blood flow.

as HAEMOGLOBIN in other animals. The metallic radicle of its PROSTHETIC GROUP, however, is copper rather than iron, giving the molecule a bluish colour.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
The structure of molluscan haemocyanins and their homology with tyrosinases.
Stokes, "Whole cholera toxin and B subunit act synergistically as an adjuvant for the mucosal immune response of mice to keyhole limpet haemocyanin," The Journal of Immunology, vol.
The researchers compared the properties of blood pigment haemocyanin, responsible for oxygen transport, of Antarctic, Temperate and Warm-Adapted octopods.
Modulation of haemocyanin oxygen affinity: properties and physiological implication in a changing world.
Dot-dye-immuno assay and dor-ELISA for the serological differentiation of acute and chronic schistosomiasis using keyhole limpet haemocyanin as antigen.
Antigens towards which CT or its subunits have adjuvant activity Antigen Route Reference Keyhole Limpet peroral (p.o.) 33,34 Haemocyanin (KLH) intranasal (i.n.) intravenous 35 (i.v.) Ovalbumin (OVA) i.n.
An ergonovine-glutaryl-keyhole limpet haemocyanin (EG-KLH) conjugate was manufactured for the purpose of eliciting an immune response in Balb/C mice.
Haemocyanin concentration in the shrimp Crangon crangon (L.) after exposure to moderate hypoxia.
1980, Haemocyanin concentrations in field populations of three species of southern Australian abalone.
Between-individual variation in haemocyanin concentrations in the Norway lobster Nephrops norvegicus following exposure to hypoxia and manganese.
Moult cycle of the decapod Nephrops norvegicus (Linnaeus, 1758): description of stages and sequential changes in haemolymph protein and haemocyanin. Mar.