5494
HBx strongly elevates levels of GTP - bound Ras , activated and phosphorylated Raf , and tyrosine - phosphorylated and activated MAP kinase .
 HBx, Ras, Raf, MAP kinase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HBx, Ras, Raf, MAP kinase