Table 1.

Total number of TH-GAD- and 5-HT_2cR-immunoreactive cells detected in the various VTA subnuclei^a

Subnucleus	Bregma Locationb	TH-immunoreactive cellsc	GAD-immunoreactive cellsd	5-HT2CR-immunoreactive cellse
IF
Rostral	−5.00 to −5.40	79.18±3.52	64.36±7.36	67.23±4.26
Mid	−5.50 to −5.80	107.82±11.12	84.56±8.20	96.05±6.55
PN
Rostral	−5.00 to −5.40	107.45±8.87	100.50±11.65	110.71±9.12
Mid	−5.50 to −5.80	157.00±16.87	112.91±10.18	133.91±9.01
Caudal	−5.90 to −6.30	80.25±12.85	83.50±8.06	87.31±8.44
PBP
Rostral	−5.00 to −5.40	132.73±9.09	88.70±11.45	107.05±6.51
Mid	−5.50 to −5.80	141.08±12.88	99.22±6.49	124.62±7.55
Caudal	−5.90 to −6.30	109.29±13.71	91.88±8.54	73.73±7.07
Rli
Rostral	−5.00 to −5.40	60.55±5.56	71.82±6.49	78.73±4.77
Mid	−5.50 to −5.80	69.33±4.91	63.36±5.26	80.95±6.38
Cli
Caudal	−5.90 to −6.30	116.88±10.30	73.14±6.73	76.33±7.70

^aTwo separate regions of similar size (64.52 cm² each) were used in all levels for the PN and PBP; a single region was used for all levels of the IF(58.06 cm²), RLi (58.06 cm²), and Cli (64.52 cm²).

^bBregma locations according to the brain atlas of Paxinos and Watson (1998).

^cTH: average of 10–12 rostral and midsections, 8–9 caudal sections collected from 3 rats.

^dGAD: average of 9–11 rostral and mid sections, 7–8 caudal sections collected from 3 rats.

^e5-HT_2CR: average of 21–122 rostral and mid sections, 15–116 caudal sections collected from 3 rats.