A CD8 T cell possess which of the following cytotoxins?

Double negative thymocytes will initiate rearrangement of which receptor genes first? 

___ are stimulated by cytokines binding to cytokine receptors. This stimulation leads to the phosphorylation and activation of ___.

Which of the following is the least common known lineage of the T-cells?

Which of the following receptor genes are the first to be rearranged in a double negative thymocyte?

Positive selection:

Before positive selection, T cells can express two different ___ chains and therefore can express two different TCR’s on their surface.

Which of the following is the least common known lineage of the T-cells?

What does “double negative” thymocyte refer to?

Which CDR’s in a TCR recognize and contact primarily the MHC helices?