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UV exposure from excessive sunlight
illega exposure
the movable type printing press. ( which helped the Bible spread) and brought many people freedom.
Active Immunity
Pooled human serum globulin is antibodies (or antitoxins) found in our blood. When administered to a patient after exposure to Hepatitis A it is a type of Artificially acquired passive immunity.
If both parents have type A blood then the baby should have type A blood. or type O blood
Chronic Exposure
blood type A has type A antigens. blood type B has type B antigens.
If the blood type of the donor is different from the receivers blood type, the blood type of the revive can attack the different type of blood
a person with O+/- blood can only receive O+/- blood respectively. O+ can give blood to any other + blood type, and O- can give blood to anyone.
My elder sister have blood type AB, myself having blood type A and my younger brother having blood type O.
Blood type O can only receive from other blood type Os, because of reactions to the A and B antigens from Blood Type A, Blood Type B and Blood Type AB.