Table 1.

The mean number and the range of the intrinsic neuronal somata in the rabbit whole-mount preparations.

Neurons	Juvenile (n = 11)		Old (n = 5)		Overall (n = 16)
	Mean	Range	Mean	Range	Mean	Range
RNC of VHH	643 ± 81	141–977	794 ± 125	669–918	698 ± 60	141–977
LNC of VHH	1222 ± 129*	562–1930*	1168 ± 164*	934–1483*	1161 ± 100*	562–1930*
Singular per VHH	304 ± 58	133–576	203 ± 43	128–280	278 ± 48	128–576
Interatrial septum	19 ± 19	0–97	2 ± 2	0–8	11 ± 10	0–97
On average per atria	2033 ± 137	1409–2723	1971 ± 265	1441–2256	2020 ± 117	1409–2723
Ganglionic ventricular at CA	31 ± 5	6–69	22 ± 10	8–42	27 ± 7	6–69
Single ventricular at CA	36 ± 7	6–55	23 ± 7	11–36	32 ± 5	6–55
On average per ventricles	65 ± 22	12–124	45 ± 17	19–78	91 ± 18	12–169
On average per heart	2146 ± 125	1650–2822	2012 ± 249	1513–2276	2118 ± 108	1513–2822

^*P < 0.05 RNC vs. LNC.

CA, conus arteriosus; LNC, left neuronal cluster; RNC, right neuronal cluster; VHH, venous part of heart hilum.