The normal coloring matter of the red blood corpuscles of vertebrate animals. It is composed of hematin and globulin, and is also called hæmatoglobulin. In arterial blood, it is always combined with oxygen, and is then called oxyhemoglobin. It crystallizes under different forms from different animals, and when crystallized, is called hæmatocrystallin. See Blood crystal, under Blood.
A component of red blood cells that transports oxygen from the lungs to other tissues in the body.
the part of a red blood cell that carries oxygen.
the oxygen transporting molecule in erythrocytes produced in the bone marrow and broken down in the spleen; consists of the helical chanin, globin, and heme, a ring complex made of iron and porphyrin.