12572
Using genome - wide siRNA screening , targets that regulate hepatocyte ApoA - I secretion were identified through transfection of 21 , 789 siRNAs into hepatocytes whereby cell supernatants were assayed for ApoA - I .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None