Graft rejection can be reduced by
A) preventing B cell activation.
B) antiphagocytic factors.
C) antihistimines.
D) preventing T cell proliferation.
E) epinephrine.
D
Bloom's Taxonomy: Comprehension
Section: Hypersensitivities
Learning Outcome: 18.15
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How is RNA interference (RNAi) used as a form of gene therapy?
A. Stem cells are removed from a patient, injected with large pieces of RNAi that carry the gene recipe for a particular enzyme, and returned to the body of the patient. B. Small pieces of RNAi are used to map the location of specific genes that need to be edited out of the genome. C. Small pieces of RNAi are used to silence the expression of specific alleles. D. Large pieces of RNAi are directly injected into the damaged cells of a patient in order to deliver functional gene recipes.
Of all of the chordate groups, why are there only two amniote groups (reptilia and mammalia)?
A) Amniotes are the only chordate group that has successfully survived the transition to land. B) The other craniate groups had brains that were not developed enough to allow the organisms to develop tool-building survival skills. C) The vertebral columns of the other vertebrates were not strong enough to survive the transition to land. D) The other jawed vertebrates were not able to obtain enough food to survive the transition to land.
AZT and Valaciclovir are antiviral nucleoside analogs that interfere with
A) protein synthesis. B) cell wall synthesis. C) cell membrane component synthesis. D) nucleic acid synthesis. E) viral attachment.