A student reads in a science magazine that a mutation in a body cell causes it to divide rapidly, forming large masses of cells. These masses of cells cause other body cells to divide uncontrollably. The student claims that the mutation is beneficial to the organism. Is the student’s claim correct?

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.