The vaccination against smallpox involves the introduction of
A. killed germs
B. weakened germs
C. live antibodies
D. germs
Answer: Option B
A. killed germs
B. weakened germs
C. live antibodies
D. germs
Answer: Option B
Which one of the following is useful in the treatment of scurvy disease?
A. Mango
B. Papaya
C. Aonia
D. Ber
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