Indicate which of the following statements is true (T) or false (F). a. __ Immat
ID: 14208 • Letter: I
Question
Indicate which of the following statements is true (T) or false (F).a. __ Immature T cells failing to successfully recombine a ß-chain locus die by apoptosis.
b. __ Apoptotic T cells are ingested by medullary epithelial cells.
c. __ Allelic exclusion of the T-cell receptor a and ß chains is effective; therefore, all T cells express only one T-cell receptor on the cell surface.
d. __ T-cell receptor rearrangements have many features in common with immunoglobulin rearrangement, including the use of the RAG-1 and RAG-2 genes.
e. __ The expression of the pre-T-cell receptor is required in order to halt ß-, ?-, and d-chain rearrangements.
Explanation / Answer
1t 2t 3f