A mother asks you what causes her son to get bronchiolitis. You would inform her that it is caused by:

A) an unknown bacteria.
B) the same bacterium that causes strep throat.
C) a pneumonia-type virus.
D) the respiratory syncytial virus.

D

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This type of diluting agent includes aromatic waters and syrups and is very useful in masking of bad tasting medicines

A) alcoholic B) fixed oil C) aqueous D) hydroalcoholic

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The special type of leukocyte that is responsible for recognizing foreign antigens, producing antibodies, and developing memory is the:

a. lymphocyte c. thrombocyte b. cytoplast d. erythrocyte

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