What is the drawback of live attenuated vaccines?
A) They require more secondary reimmunizations than other vaccines.
B) They are not effective in adults.
C) They do NOT provide a long-lasting secondary immune response.
D) They can cause disease in some immunocompromised individuals.
Answer: D
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Organic compounds become distributed through a
plant by __________. Fill in the blank(s) with the appropriate word(s).
Why is AIDS such a deadly disease?
A. Because it is caused by a virus. B. Because they have not isolated the virus yet that causes AIDS. C. Because the virus cripples the immune system. D. The body does not recognize the virus as foreign. E. It is a sexually transmitted virus.
________is formed when atom gained or loose electrons.
a. molecule b. isotops c. ions