Urban farming refers to a variety of ways people can grow food in cities. Urban farming most likely
never affects the environment
B
never affects humans or the environment
C
can help the environment but always harms people
D
can be good for the environment and for people

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.