THE HUMAN IMMUNE SYSTEM
BLOOD GROUPS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A
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B
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AB
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O
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Detailed explanation-1: -blood group AB – has both A and B antigens, but no antibodies.
Detailed explanation-2: -Human blood of AB group does not contain antibodies to erythrocyte antigens of other blood groups. This determines natural resistance of people to many infectious diseases whose agents have antigens on the surface of their cells that are similar to antigens of one or another group of blood.
Detailed explanation-3: -AB positive blood type is known as the “universal recipient” because AB positive patients can receive red blood cells from all blood types.
Detailed explanation-4: -Antigens are surface proteins found on red blood cells. Type O negative blood is the only blood type with no antigens.
Detailed explanation-5: -Anti-A and anti-B are found in the sera of individuals who lack the corresponding antigens. They are produced in response to environmental stimulants, such as bacteria. These antibodies are produced after birth, reaching a peak at 5–10 years of age, and declining with increasing age.