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B
Selman Waksman
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C
Cesar Milstein
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D
Edward Jenner
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Solution
The correct option is D Edward Jenner
Edward Jenner found that vaccination with cowpox can protect individuals from smallpox. Edward Jenner is well known for his contribution to immunization and the eradication of smallpox.
Jenner's work is widely regarded as the foundation of immunology and known as the father of immunology.
The smallpox vaccine is the only way to prevent smallpox. The vaccine is made from a virus either weakened or attenuated, which is introduced into the blood.
This helps in building the antibodies against the smallpox virus in the body. Smallpox was eradicated by this vaccination program, starting in 1967.