5133
In contrast , at least some of these sites were not methylated in DNA from the B - cells expressing high levels of DR alpha mRNA .
 Anatomy: B - cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: B - cells 
Answer:
 Anatomy: B - cells