The chemical mediators that cause an allergic reaction are released by:
A. lymphocytes and neutrophils.
B. histamines and leukotrienes.
C. macrophages and eosinophils.
D. basophils and mast cells.
Ans: D. basophils and mast cells.
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________ Polio is caused by a virus and is spread through contact with the feces of an infected person
Indicate whether the statement is true or false
Any witness called to the stand to testify can provide opinions about what they believe
a. True b. False
Differentiation of the type of influenza virus, such as type A versus B, is important because
A) the information is used to create the vaccine for the next year. B) it determines if additional testing is necessary. C) antigenic shift can cause the emergence of a new strain. D) antiviral agents used for treatment depend on the type identified.
Which characteristics will always lead to a positive relationship?
A)empathy, sympathy, and intelligence? B) competency, trust, and respect C) intelligence, hard work, and diligence D) diligence, compassion, and punctuality