8. T Cell Responses

Which of the following is required for activation of naive T cells into effector cells?

MHC and costimulatory protein binding to T cells

All of the following are true of CD4 cells except

They are involved in direct killing of target cells?

Which of the following would be a potential explanation for T-cell mediated autoimmune disease?

Failure of apoptosis of self-recognizing T cells

This immune cell is able to respond quickly after any subsequent encounter with the same eantigen.

Memory cell

Which cells stimulate both arms of the immune response?

Helper T cells

Fill in the blanks

Once antigen binds to the B or T cell, the second phase of B and T cell formation will occur. This is called ___1___. When antigens bind, it is called ___2___. This leads to cells dividing, called ___3___. When they divide they will become functionally more specific, which is called ___4___.

1. Clonal expansion, 2. Activation, 3. Proliferation, 4. Differentiation

This cell helps B cells convert to plasma cells.

CD4TH1

A T cell receptor

Can undergo somatic recombination