A fisherman who cut himself on a fishing hook later develops a cutaneous disease at the inoculation site. The exudate is aspirated and set up on a routine AFB medium for culture. It is incubated at 37C, but no growth is observed after 8 weeks; however, a slide of the exudate was AFB-positive. Which one of the following statements explains these findings?
a. The infection is most likely the result of a viral infection.
b. The organism should have been incubated at 30C.
c. The organism should have been incubated at 42C.
d. The infection is most likely fungal in na-ture.
Which cell line has demonstrated a consistent season-to-season isolation frequency of influenza viruses?
a. Primary monkey kidney
b. Lung fibroblasts
c. HeLa
d. HEp-2
Specialized secretory cells centrally located in the brain in the third and fourth ventricles that produce CSF are called the:
a. choroid plexus.
b. ventricles.
c. meninges.
d. pia mater.
The large, fluid-filled spaces within the brain are called the:
a. choroid plexus.
b. ventricles.
c. meninges.
d. pia mater.
Known to cause an inflammatory bowel disease referred to as Johne's disease in cattle, sheep, and goats, which organism has been isolated from the bowel mucosa of patients with Crohn dis-ease?
a. M. paratuberculosis
b. M. avium-intracellulare
c. Mycobacterium phlei
d. Mycobacterium lepraemurium
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