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.
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Question:  The atopic disposition , indicated by positive skin reactions and IgE antibody titers etc . , and the bronchial reactivity to inhaled acetylcholine were examined on the following three groups : ( 1 ) 20 young adults with a history of childhood asthma who have been symptom - free for more than 4 yr ; ( 2 ) 20 current asthmatics , and ( 3 ) 20 healthy young adults .

Answer: IgE antibody


Question:  Molecular cloning of cDNAs encoding alpha - subunits of guanine nucleotide - binding regulatory proteins ( G - proteins ) has revealed the existence of nine species of alpha - subunits .

Answer: G - proteins


Question:  Role of zinc - finger proteins Sp1 and zif268 / egr - 1 in transcriptional regulation of the human synaptobrevin II gene .

Answer:
egr - 1