Sixty percent of double-negative thymocytes are considered immature T cells. This term is used because these T cells lack __________ receptors.

Which of the following represent double negative 1 (DN1)

Anergic B cells

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

Cytotoxic T cells that lack expression of perforin are more defective in killing target cells than those that lack granzymes

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

Mu chain is expressed at which stage of B cell development?

The pre-B cell receptor consists of:

The pre-B-cell receptor provides an important signal that induces transition of pro-B cells to pre-B cells. An important characteristic of this receptor is that:

A disaster is best defined as: