Hemoglobin-Iron containing protein pigments occurring in the red blood cells of vertebrates and functioning primarily in the transport of oxygen from the lungs to tissues of the body.

Dimer-The pair of alpha and beta subunits formed in the dissociation of hemoglobin.

Emulsion-An intimate mixture of two incompletely miscible liquids (as oil and water) in which one of the liquids in the form of droplets is dispersed in the other.

Cross-link-A comparitively short connecting unit (as a chemical bond or a chemically bonded atom or group) between neighboring chains of atoms in a complex molecule.

Electrolyte solution-A water based solution that conducts an electric current.

Vasoconstriction-Narrowing ofblood vessels.

Perfluorocarbons-wholly synthetic oxygen carriers; a group of chemicals with limited capacity for performing the function in red blood cells by transporting oxygen through the circulatory system.

Iso-agglutinating antigens-component in blood that contains the information used to identify blood types in allogeneic and autologous transfusions.