What molecules are needed for cellular respiration to take place

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

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.