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ceybe ceybe
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6 years ago
To make a vaccine against the polio virus, researchers treated the polio virus with formaldehyde and used this preparation to inject people. This is an example of
A) an inactivated virus vaccine.
B) an attenuated virus vaccine.
C) a vaccine of isolated viral proteins.
Textbook 
Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
Authors:
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6 years ago
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ceybe Author
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6 years ago
Correct again Smiling Face with Open Mouth
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