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.

Q:  We have previously reported the first isolation of a c - myc - null cell line .

A: c - myc
****
Q:  The two complexes were detected with a similar activation kinetics upon IL - 4 stimulation .

A: IL - 4
****
Q:  The RTI40 gene spans 35 kilobase pairs ; it contains 6 exons and at least 6 rat Identifier repetitive elements .

A:
RTI40 gene
****