The procedure developed by the Chinese to protect against smallpox was called

A. Oriental poxination.
B. humoral immunity.
C. variolation.
D. naturally acquired immunity.


C

Biology & Microbiology

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A mutation in the MAOA gene is associated with ____ behavior

a. depressive b. risk-taking c. violent d. schizophrenic e. bipolar

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When direct examination of virioplankton is carried out by transmission electron microscopy, the numbers obtained are reported as ________.

A. particulate organic matter B. plaque-forming units C. virus-like particles D. viral potential

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Normal flora may be found in all of the following environments except

A. The vagina B. The pharynx C. The axilla D. The upper respiratory tract E. The blood

Biology & Microbiology

Which organs are particularly susceptible to damage by certain antimicrobial drugs?

A) brain and spleen B) kidneys and liver C) pancreas and gallbladder D) heart and lungs E) stomach and intestines

Biology & Microbiology