3281
While comparable actinomycin D concentrations were observed in the kidneys and livers of Abcb1a / 1b ( - / - ) and Abcc2 ( - / - ) mice , concentrations in the brain were significantly higher at 6h following drug administration in Abcb1a / 1b ( - / - ) mice compared to WT .
 Chemical: actinomycin D
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: actinomycin D 
Answer:
 Chemical: actinomycin D