15652
Gemcitabine conjugates demonstrated up to 127 times higher in vitro efficacy than the free drug against various cancer cells , including the lines resistant to nucleoside analogs .
 Chemical: Gemcitabine; Chemical: nucleoside
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: Gemcitabine; Chemical: nucleoside