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Question
What are the primary chemical mediators released from mast cells during a type I hypersensitivity reaction?A) antibodies
B) interleukin I and tumor necrosis factor
C) histamine and serotonin
D) cytokines
Answer
This answer is hidden. It contains 1 characters.
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Which of the following statements about chlamydial infections is TRUE?
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The Spanish flu of 1918 was caused by an ________ influenza virus.
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The study of the occurrence, distribution, and determinants of health and disease in a population is the field of
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B) prevalence / mortality
C) mortality / morbidity
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Cholera is an example of a pandemic disease that
A) has multiple wild animal reservoirs and is thus difficult to eradicate.
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C) is spread through direct contact and has only a human reservoir.
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A) one
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