2979
Male F344 rats , 5 weeks of age , were maintained on diet containing 1 % or 2 % BHA by weight and simultaneously on drinking water supplemented with RA at various concentrations ( w / v ) for 52 weeks .
 Chemical: BHA; Chemical: RA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: BHA; Chemical: RA