810
A CXCL12 / CCL5 ratio > 1 . 10 in 2 / 3 independent experiments is indicative of a sensitizer , whereas a CXCL12 / CCL5 ratio <= 1 . 10 is indicative of a non - sensitizer .
 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