charles river cd rats ( 200 g ) were divided into three groups receiving either 1 % 2,5-hexanedione ( 2,5-hd ) or 0.035 % 3,4-dimethyl-2,5-hexanedione ( dmhd ) in the drinking water or water alone ( control ) for 4 weeks .
C0599638
drinking water
C0043047
water