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The c - raf - 1 proto - oncogene is the cellular homologue of v - raf , the oncogene of the acutely transforming retrovirus 3611 - MSV .
 GENE: c - raf - 1 proto - oncogene; GENE: cellular homologue of v - raf
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: c - raf - 1 proto - oncogene; GENE: cellular homologue of v - raf