26092
Importantly , compounds 4 and 13 at 20 mu M were the most promising in this study , inducing respectively ~ 11 - and 7 - fold increases in apoptotic cells as compared to vehicle control , whereas 5 - FU increased apoptosis by ~ 2 - fold .
 Chemical: 5 - FU
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: 5 - FU