Q: In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
The delta Mo + SV tumor DNAs from B - lineage tumors were typically rearranged at the immunoglobulin gene loci and contained germ line configurations of the T - cell receptor beta gene .
A:
immunoglobulin gene loci