Some toxic compounds are ingested and retained in the tissues. these pollutants pose special risks to humans and other organisms high on the food chain because of which process?
a. synergism

b. compound contamination

c. biomagnification

d. threshold effect

e. carcinogenesis

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.