helper t cells

Question 1

made???

Answer 1

bone marrow`

Question 2

mature???

Answer 2

thymus receptor

Question 3

activated???

Answer 3

by non self antigens (phagocyte acting as antigen presenting cell)

Question 4

role???

Answer 4

activate cytotoxic t-cells

stimulate phagocytosis

stimulate b-cells to divide and secreate antibodies