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| Q. |
The term 'Rh factor' refers to - |
| A. | Rhesus factor |
| B. | Rheumatoid factor |
| C. | Renal factor |
| D. | Rhombic factor |
| Answer» A. Rhesus factor | |
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Explanation: Each person's blood is one of four major types: A, B, AB, or O. Blood types are determined by the types of antigens on the blood cells. Antigens are proteins on the surface of blood cells that can cause a response from the immune system. The Rh factor (Rhesus factor) is a type of protein on the surface of red blood cells. Most people who have the Rh factor are Rh-positive. |
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