This document discusses the history and science of blood types, including the discovery of antigens and antibodies in blood and their role in determining blood compatibility. It specifically examines the rare Bombay blood type, which can receive blood from any type but can only donate to other Bombay individuals. The document stresses the importance of blood donation and registration to help those with rare blood types.

2. History of blood
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3. H antigen
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4. Secretor Status Summary
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5. reaction
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6. Blood Groups (Antigens and
Antibodies)

7. A person with a Bombay Blood type can
take and donate blood to whom
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8. Bombay blood type is often not
recognised
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9. Register &get blood
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