What is the function of kinetochore microtubules in the mitotic spindle? O A. They keep sister chromatids in pairs
B. They define the furrow during cytokinesis
C. They break down the nuclear envelope
D. They attach to chromatids and pull them towards the poles of the cell

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.