TASK DEFINITION: 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.
PROBLEM:  Since 1985 the combination of chlorambucil ( 10 mg daily , initially for six weeks , then alternating fortnights for 12 weeks ) and interferon - alpha 2b ( Schering - Plough ; 2 x 10 ( 6 ) U / m2 three times weekly by subcutaneous injection for 18 weeks ) has been compared in a randomised trial with chlorambucil alone in previously untreated patients with stage III or IV follicular lymphoma .

SOLUTION: interferon - alpha

PROBLEM:  Members of the steroid / hormone nuclear receptor superfamily regulate target gene transcription via recognition and association with specific cis - acting sequences of DNA , called hormone response elements ( HREs ) .

SOLUTION: nuclear receptor superfamily

PROBLEM:  Three experiments using 20 microM 2 - ( hydroxyamino ) - 1 - methyl - 6 - phenylimidazo [ 4 , 5 - b ] pyridine ( N - OH - PhIP ) were performed to induce mutations in the dihydrofolate reductase ( DHFR ) gene of a hemizygous Chinese hamster ovary ( CHO ) cell line ( UA21 ) .

SOLUTION:
dihydrofolate reductase