T cells that react with self antigens are destroyed through:a
cytokinesis.
b. macrophages.
c. perforins.
d. apoptosis.
e. receptor mediated endocytosis.
D
You might also like to view...
Which of the following LEAST belongs with the others?
A. thymine dimer B. UvrA protein C. direct repair D. nucleotide excision repair E. UvrC protein
Gribbles play an important role in kelp communities
a. by weakening holdfasts enabling kelps to be replaced. b. by strengthening holdfasts enabling kelps to remain attached. c. by randomly disturbing the environment. d. by providing substrate for kelp undercover species. e. by acting as keystone predators.
Of the three categories of media classification, which of the following refers to the chemical composition of the medium?
A) general purpose B) selective C) differential D) nonsynthetic
Often times a hypothesis test will involve determining the average treatment effect (ATE) or the:
A. treatment effect averaged over many replications of the same experiment. B. average difference in the treated and untreated outcome across subjects in the population. C. treatment effect of the average subject in the sample. D. None of the answers is correct.