What is the difference in cooling rate betwwen a granite and an obsidian and how do you know

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.

What could happen if two base pairs on a strand of dna or switched

Wich is not standing in the way of astronomers getting a good view of different star