Table 2.

Numbers of DBH-positive cells in hindbrain regions

Side	3 d			8 d
	A1	A1/C1	C1m	A1	A1/C1	C1m
Control	19.9 ± 1.8	32.3 ± 2.0	32.3 ± 1.6	29.2 ± 2.0	34.2 ± 0.7	39.0 ± 1.9
DBH siRNA	20.0 ± 1.5	13.8 ± 1.4**	31.7 ± 2.2	26.7 ± 0.6	19.5 ± 3.2*	34.7 ± 2.5

Numbers (mean ± SEM) of DBH-positive cells in hindbrain regions, 3 or 8 d after injection of DBH siRNA (0.02 nmol) into one side of A1/C1 and control ntRNA into the contralateral A1/C1 region.

*p < 0.01,

**p < 0.001 versus the control side by paired t test (n = 4 rats per group).