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A red blood cell, (the cells that Give blood its distinctive red colour). A red blood cell's (erythrocyte) function is to carry haemoglobin around the body. Haemoglobin carries oxygen which is required for cellular respiration

An RBC count is used in a variety of tests in the diagnosis of disease

They are normally confined to blood vessels, which is specialized to transport oxygen. When mature, red blood cells are biconcave discs, which lack a nucleus and contain hemoglobin. Women have about 4 million to 5 million erythrocytes per cubic millimeter (microliter) of blood and men about 5 million to 6 million; people living at high altitudes with low oxygen tension will have more. The RBC reference range 4.5-5.9 (x1012/L) in males and 3.8-5.2 (x1012/L).

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16y ago

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