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]:  Sequence and deletion analysis of the recombination enhancement gene ( ref ) of bacteriophage P1 : evidence for promoter - operator and attenuator - antiterminator control .
[A]: recombination enhancement gene


[Q]:  We have previously demonstrated that pyrene in diesel - exhaust particles ( DEP ) has an adjuvant activity on immunoglobulin E ( IgE ) antibody production in mice immunized with Japanese cedar pollen allergen ( JCPA ) or ovalbumin ( OA ) intraperitoneally .
[A]: immunoglobulin E


[Q]:  Mycobacterium tuberculosis inhibits IFN - gamma transcriptional responses without inhibiting activation of STAT1 .
[A]:
IFN - gamma