Table 1.

Percentage of 5-HTR4-positive cells coexpressing p11 mRNA

Brain region	Mouse 1	Mouse 2	Mouse 3	Average (SEM)
Cortex	89.8	96.1	98	94.6 (2.5)
Striatum	89.3	96.6	93.3	93.0 (2.1)
Amygdala	91.4	92	91	91.5 (0.3)
Hippocampus (DG)	100	100	100	100 (0)
Hippocampus (CA1)	98.9	98	98	98.3 (0.3)

Quantification of images of the type shown in Figure 2 demonstrated that 90–100% of cells expressing 5-HTR4 mRNA also express p11 mRNA. Three C57BL/6 male mice were used for this analysis. For each brain region, five images per mouse were analyzed (150–200 cells per mouse per region).