An example of lysogeny in animals could be
A: slow viral infections.
B: latent viral infections.
C: T-even bacteriophages
D: Infections resulting in cell death
A: slow viral infections.
B: latent viral infections.
C: T-even bacteriophages
D: Infections resulting in cell death
举一反三
- 利用PubMed精确检索短语HIV infections,应该采用的检索式是 ( ) A: HIV infections B: [HIV infections] C: (HIV infections) D: HIV infections[MH] E: HIV infections[ALL fields]
- 下列哪项与An uptick in influenza A infections began to appear. 意思最相近？ A: There has been a slight increase in influenza A infections. B: A cut could be seen in influenza A infections. C: There has been a surge in the number of patients infected with influenza A. D: A great number of people were infected with influenza A.
- Which one of the following is a fundamental principle of viral disease causation? A: One virus type induces a single disease syndrome. B: Many viral infections are subclinical and do not produce clinical disease. C: The type of disease produced by a virus can be predicted by the morphology of that virus. D: A particular disease syndrome has a single viral cause. E: Social factors do not influence the occurrence of viral diseases.
- Interferons are an important part of the host defense against viral infections. What is interferon’s principal mode of action? A: It is present in the serum of healthy individuals, providing a viral surveillance role. B: It coats viral particles and blocks their attachment to cells. C: It induces synthesis of one or more cellular proteins that inhibit translation or transcription. D: It protects the virus-infected cell that produced it from cell death. E: It directly inactivate the viruses.
- According to Ban Ki-moon, the number of infections and deaths in the cholera in Haiti could be A: 2,000. B: 90,000. C: 180,000. D: 184,000.