4910
Although paclitaxel alone failed to induce p38 MAPK activation , subsequent ( but not prior ) exposure to PD98059 induced a dramatic increase in p38 MAPK phosphorylation .
 GENE: p38; GENE: p38
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: p38; GENE: p38