2282
It has been shown from pulsed - field gel electrophoresis ( PFGE ) that the monoamine oxidase genes A and B ( MAOA & MAOB ) and DXS7 loci are physically very close .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities:  
Answer:
 None