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Inhibition of Raf - 1 signaling by a monoclonal antibody , which interferes with Raf - 1 activation and with Mek substrate binding .
 GENE: Raf - 1; GENE: Raf - 1; GENE: Mek
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: Raf - 1; GENE: Raf - 1; GENE: Mek