26090
Morphologic evaluation of HCT116 nuclei following Hoechst staining and fluorescence microscopy revealed that compounds 1 , 4 , 7 , 10 , 12 , and 13 induced apoptosis in HCT116 colon carcinoma cells , producing similar , or higher , apoptosis levels when compared with 5 - fluorouracil ( 5 - FU ) , the cornerstone cytotoxic used in colon cancer treatment for several decades .
 Chemical: 5 - fluorouracil; 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 - fluorouracil; Chemical: 5 - FU