clonal selection Flashcards
1
Q
what are 3 types of effector cell
A
cytotoxic, helper, and regulatory T cells
2
Q
what do effector b cells produce
A
antibodies
cytokines
3
Q
what is clonal expansion
A
Cells that have rearranged the right gene segments bind antigen. Antigen binding triggers cell division.
If the variable region can bind to an antigen it triggers the B-cell to proliferate. This is called clonal expansion.
4
Q
when do T-cells proliferate
A
after antigens are taken up and degraded by phagocytosis
5
Q
what cells present antigen to helper T-cells
A
Dendritic cells and macrophages