Figure 1.
a, Microphotographs of tyrosine-hydroxylase-stained fibers, in the prelimbic cortex (left column)/infralimbic cortex (right column), for representative rats with bilateral injection of vehicle (SHAM group) or 6-hydroxy-dopamine in the prelimbic cortex (PL group)/infralimbic cortex (IL group). Top, Schematic representation of coronal sections in which photographs were taken (Paxinos and Watson, 1998); scale bar, 100 μm. Orientation of each photograph is from deep (left) to superficial layers (right). b, Quantification of tyrosine hydroxylase-stained fibers (relative to SHAM group, mean + SE) for the PL group (white bars) and the IL group (black bars) in prelimbic and infralimbic cortices. c, Quantification of dopamine-β-hydroxylase-stained fibers (relative to SHAM group, mean + SE) for PL group (white bars) and IL group (black bars) in prelimbic and infralimbic cortices. Dotted lines correspond to baseline levels in SHAM group. *p < 0.05, **p < 0.01.