48
Monoclonal antibodies to the hapten phenyloxazolone were raised 7 days after immunization in mice of six strains ( BALB / c , C57BL - Igha , DBA2 , RF , A / J , and CE ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None