Two distinct lineages of T cells can be identified based on their expression of α:β versus γ:δ T-cell receptors. A deficiency in the signaling receptor Notch1 would result in

WHich of the following is NOT a component released from cytotoxic T cells?

Tumors result from which important processes:

A given APC can be bound by both a CD4 T cell and a CD8 T cell. In some instances, the binding of the CD4 T cell can enhance the CD8 response. What is one of the major mechanisms through which this occurs?

B cells that fail to recirculate through the lymphoid follicle

Inhibition of a Tʜ1 response occurs via which cytokines

Which of the following are B cell tumors?

Death by neglect refers to which of the following?

Which of the following correctly describes events necessary for naive T cell entry in to the lymph node?

RAG-1 and RAG-2 briefly turned off during which satge of B cell development?