Author: Anonymous

In B cells, transport of immunoglobulin to the membrane is dependent on association with two invariant proteins, Igα and Igβ. Which of the following invariant proteins provide this function for the T-cell receptor in T cells? (select all that apply)

The immunological consequence of severe combined immunodeficiency disease (SCID) caused by a genetic defect in either RAG-1 or RAG-2 genes is:

All of the following events occur within germinal centers except

Place the following phases of a B cell’s life history in the correct chronological order where 1 is the 1st step and 6 is the last: negative selection [a] attacking infection [b] finding infection [c] searching for infection [d] repertoire assembly [e] positive selection [f]

The complementarity-determining region (CDR) 1 and CDR2 loops of the T-cell receptor contact the _______.

When expression of _______ is turned off in small pre-B cells, the result is the presence of P nucleotides but an absence of N nucleotides in around 50% of light-chain genes.

Which of the following statements regarding T-cell receptor recognition of antigen is correct?

The peptide-binding groove of MHC class I molecules is composed of the following extracellular domains

Immature B cells develop into B cells in the

All of the following are highly polymorphic except