Langerhans’ cells are a type of mature dendritic cells that take up antigens when the skin is breached.

The thymus is very active throughout life and does not atrophy with age.

Which of the following is true about AIRE?

Which of the following are found in CD-8 T-cells cytotoxic granules?

Central tolerance for T-cells takes place in the ________. 

Which chemotactic molecule signals naive T-cells that do not meet their antigen in a lymph node to exit that lymph node and continue to recirculate until they do meet their antigen?

A “double-positive” thymocyte that is going through positive selection will:

Which of the following cytokine is expressed by T regulatory cells?

When an immature T-cell fails to productively rearrange its genes, which of the following happens?

A T-cell going through the selection process can: