1738
PDGF stimulated CDK2 activity in mesangial cells and decreased the level of p27 ( kip1 ) cyclin kinase inhibitor protein .
 GENE: PDGF; GENE: CDK2; GENE: p27; GENE: kip1
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: PDGF; GENE: CDK2; GENE: p27; GENE: kip1