μg o

f be

nzen

e/m

l of

bloo

d

Supplemental Figure 1.

Time (h)

ng o

f be

nzen

e/m

g of

ti

ssue

Maternal Blood

Fetal liver

MAC57Bl/6N

CAT

HQ

MA

CAT

HQ

CD-1

Time (h)

ng o

f met

abol

ite p

er m

g of

liv

er ti

ssue

Supplemental Figure 2