11432
Inhibition of the Mek / Erk pathway in Rat1 / ras cells , using the Mek inhibitor , PD98059 , resulted in complete cytoskeletal recovery , indistinguishable from that induced by HR12 .
 GENE: Mek; GENE: Erk; GENE: ras; GENE: Mek
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: Mek, Erk, ras, Mek 
Answer:
 GENE: Mek; GENE: Erk; GENE: ras; GENE: Mek