mRNA from human MDM was analyzed for expression of DRD1, DRD2, DRD3, DRD4,DRD5, and 18s through qRT-PCR. Expression of all receptors was normalized to 18s for each donor. Analysis using a one-way ANOVA showed the D1-like receptors DRD1 and DRD5 (red dots) were expressed at significantly higher levels than the D2-like receptors, DRD2, DRD3, and DRD4 (blue dots). *p<0.05, **p<0.01, ****p<0.0001