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.

 Avian EMILIN was extracted from 19 - day - old embryonic chick aortas and associated blood vessels and purified by ion - exchange chromatography and gel filtration .
Avian EMILIN

 The aromatic hydrocarbon receptor ( AHR ) is a ligand - activated transcription factor that regulates the expression of several drug - metabolizing enzymes and has been implicated in immunosuppression , teratogenesis , cell - specific hyperplasia , and certain types of malignancies and toxicities .
aromatic hydrocarbon receptor

 No transactivation of the ovalbumin promoter ( pLovTATA ) template control was observed .

ovalbumin promoter