Answer:
Sorry I haven't read this chapter .
Number one. Degradation of the antigen. Nunber two. activation of helper T cell. Number three. antigen recognition byT cell. Number four. antibodies recognize antigen.
Answer:
The last one, hereditary risk factors.
Answer:
antioxidants
Explanation:
Antioxidants — such as vitamins C and E and carotenoids, which include beta-carotene, lycopene and lutein — help protect healthy cells from damage caused by free radicals.