1976
The studied protein fragments consist of residues Arg183 - His267 of the human ER and residues Lys438 - Gln520 of the rat GR .
 GENE: human ER; GENE: GR
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: human ER; GENE: GR