In which stage of B-cell development do the Ig genes for the light chain begin rearrangement?

In general, when is the expression of genes RAG 1 and RAG 2 halted during the development of a B-cell?

Matching (answers may be used more than once or not at all)

Which components listed below are part of signaling for a TCR?

Cross presentation:

Which disease state is caused by loss of approximately 80 % of the RAG proteins enzymatic activity due to a missense mutation? (hint: infant has a red rash on the face and shoulders)

Matching (answers may be used more than once or not at all)

Each human expresses thousands of MHC molecules and each MHC molecule is specific for a single antigenic peptide.

Which of the following is true about TCR chains?

Which of the following is false about T-cell populations?