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anonymous

  • one year ago

What was one of the challenges Dr. Salk faced in his attempt to create a polio vaccine?

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  1. anonymous
    • one year ago
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    A: Dr. Salk did not have enough money to pay for his research and supplies. B:Dr. Salk had to create one vaccine that was effective against three different viruses C:Dr. Salk had to convince government officials to allow him to test the vaccine. D:Dr. Salk's idea for a vaccine was not supported by other scientists and physicians.

  2. CBARREDO1
    • one year ago
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    C:Dr. Salk had to convince government officials to allow him to test the vaccine.

  3. anonymous
    • one year ago
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    C

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