An investigator is developing a drug that selectively inhibits the retrograde axonal transport of rabies virus towards the central nervous system. To achieve this effect, this drug must target which of the following?
ADynein
BTubulin
CNidogen
DKinesin
EAcetylcholine
If the genetic material were isolated and injected into the cytoplasm of a human cell, which of the following would produce viable, infectious virions?
ALassa fever virus
BRabies virus
CRhinovirus
DMumps virus
EInfluenza virus
A 3-year-old girl is brought to the physician by her parents because of a barking cough, a raspy voice, and noisy breathing for the last 3 days. Five days ago, she had a low-grade fever and runny nose. She attends daycare. Her immunizations are up-to-date. Her temperature is 37.8°C (100°F) and respirations are 33/min. Physical examination shows supraclavicular retractions. There is a high-pitched sound present on inspiration. Examination of the throat shows erythema without exudates. Which of the following is the most likely location of the anatomic narrowing causing this patient's symptoms?
ABronchioles
BPharynx
CSubglottic larynx
DDistal trachea
EEpiglottis
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