Table 5.

P-values of layer-versus-layer pairwise comparisons for D1R and D2R expression on different neuronal classes

D1R
	II-III versus IV	II-III versus V	II-III versus VI	IV versus V	IV versus VI	V versus VI
Neurogranin	0.627	0.719	0.122	0.509	0.762	0.158
SMI-32	—a	—	0.255	—	0.350	0.321
Parvalbumin	0.545	0.159	0.882	0.080	0.512	0.236
Calbindin	0.027	0.626	0.288	0.210	0.008 b	0.232
Calretinin	0.602	0.108	1.5 −4 b	0.176	0.013	0.140
D2R
	II-III versus IV	II-III versus V	II-III versus VI	IV versus V	IV versus VI	V versus VI
Neurogranin	0.033	0.008 b	1.7 −9 b	0.888	0.171	0.043
SMI-32	0.215	0.351	0.567	0.681	0.119	0.190
Parvalbumin	0.017	0.008 b	0.002 b	0.479	0.880	0.466
Calbindin	0.687	0.966	0.572	0.739	0.944	0.699
Calretinin	0.265	0.520	0.978	0.433	0.277	0.581

^aPerformance of a chi-squared or Fisher’s exact test was not valid in the case of these comparisons, because for several layers the frequency of SMI-32+ neurons without D1R expression was zero.

^bBolded values are significant at Bonferroni-corrected p-value thresholds equivalent to P < 0.05.