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Our results show that unlike the case for sos1 , sos2 gene function is dispensable for normal mouse development , growth , and fertility .
 GENE: sos1; GENE: sos2 gene
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: sos1; GENE: sos2 gene