What do bactieria have in common with the cells of other living organism

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

Which characteristics are typical of a human population in the postindustrial stage?

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.