7723
Also , the DOX modulatory effect on choline uptake transport system was assessed by measuring the uptake of [ (3) H ] - choline .
 Chemical: DOX; Chemical: choline; Chemical: [ (3) H ] - choline
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: DOX; Chemical: choline; Chemical: [ (3) H ] - choline