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B
Jonas Salk
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C
J. Lederberg
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D
Landsteiner
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Solution
The correct option is B Jonas Salk Two polio vaccines are used throughout the world to combat poliomyelitis (polio). The first was developed by Jonas Salk through the use of HeLa cells. It consists of an injected dose of inactivated (dead) poliovirus. An oral vaccine was developed by Albert Sabin using attenuated poliovirus.