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To explore the mechanism of insulin receptor phosphorylation we have used NIH3T3 cells transfected with two receptor constructs : one encoding a chimeric receptor composed of the extracellular domain of the human EGF receptor and the cytosolic domain of the human insulin receptor beta - subunit , and a second construct encoding a kinase - defiecient human insulin receptor .
 GENE: insulin receptor; GENE: human EGF receptor; GENE: human insulin receptor beta - subunit; GENE: human insulin receptor
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: insulin receptor; GENE: human EGF receptor; GENE: human insulin receptor beta - subunit; GENE: human insulin receptor