Table 1.

Plasma carboxylesterase activity in 6 week old mice

Gender	ES1 Genotype	ES1 Activity (u/mL)
Male	+/+	10.9±1.6
Male	+/−	5.5±1.1
Male	−/−	0.7±0.4
Female	+/+	11.8±1.7
Female	+/−	6.2±1.1
Female	−/−	0.5±0.7

±SD; n =20 mice per group; α-naphthyl acetate substrate