Which protein-encoding genes, although present in genomic DNA, are uniquely expressed by lymphocytes?

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Quizplus · Accepted Answer

RAG1, RAG2, and TdT are uniquely expressed by lymphocytes. RAG1 and RAG2 are essential for the recombination of gene segments that encode the variable regions of T cell receptors and immunoglobulins, a process unique to lymphocytes. TdT adds nucleotides to the V(D)J recombination junctions, increasing the diversity of the antigen receptors, a process also unique to lymphocytes. DNA ligase IV, however, is not uniquely expressed by lymphocytes; it is involved in DNA repair processes in various cell types.

Which Protein-Encoding Genes, Although Present in Genomic DNA, Are Uniquely