Which of the following terms best describes chlamydial genital infection in the United States?
A) arthropodborne disease
B) epidemic disease
C) pandemic disease
D) sporadic disease
B) epidemic disease
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Which of the following is the part of the chordate digestive system just posterior to the mouth?
a. pharynx b. neural crest c. oral hood d. notochord e. cranium
The reticulum
A) is a support network of skeletal tissue fibers. B) originates in the bone marrow. C) interconnects nearby cells. D) meshes with the massive skeletal tissue network surrounding all organs.
The protozoan that causes malaria is an intracellular parasite of red blood cells (RBCs). An adaptive immune response to this parasite is problematic because
A) red blood cells do not produce MHC and, therefore, do not display the fact that they have been infected by presenting antigen. B) the parasite damages leukocytes along with RBCs. C) RBCs normally produce cytokines necessary for adaptive immune response, which this infection prevents. D) complement cannot effectively destroy RBCs. E) RBCs never enter lymphoid tissue.