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Apoptotic program is absent in some cells

Toxins of CD8 T cells have no effect on healthy human tissues

CCL19 and CCL21 among the chemotractants responsible for T cells localization in T cell zones

Which of the following represent double negative 1 (DN1)

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

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:

V-DJ rearrangement occurs at which stage of B cell development?

The pre-B cell receptor consists of:

Which of the following is NOT a cell that is produced from a common lymphoid progenitor?

This cytokine-transforming growth factor(TGF)