Table 12.

Sizes of Nerve Cell Bodies in Each Class

Class	AIN1	AIN2	AIN3	DIN1	DIN2	DIN3	DIN4	DIN5	DIN6	EMN1	EMN2	EMN3	EMN4	IMN1	IMN2	IMN3	IMN4	SN1	SN2	Misc
No. cells	54	71	126	41	15	127	62	52	22	175	192	83	328	265	110	392	314	75	44	48
Average	997	647	787	1198	1445	868	546	886	597	574	517	496	373	814	575	577	472	1788	1322	462
SD	442	225	374	508	470	468	238	534	283	263	255	189	142	413	233	218	173	762	752	308
Median	896	659	743	1058	1524	725	483	753	534	529	458	472	352	684	546	533	444	1905	1189	422
Quartile 1	639	463	491	810	1121	575	378	483	380	425	349	374	271	521	416	421	355	1228	709	314
Quartile 3	1210	785	928	1544	1826	1063	645	1037	795	649	596	561	432	1057	648	693	565	2251	1895	505
Largest	2722	1182	2109	2728	2189	2786	1282	2445	1183	2401	1782	1425	971	2842	1486	2025	1145	3623	3098	2306
Smallest	387	191	214	389	442	180	210	243	211	179	136	164	141	206	179	166	139	543	251	190

All measurements were in units of μm². Soma-dendritic area was measured from HuCD immunoreactivity for each cell as its vertical projection. Data are displayed graphically in Figure 8. The largest cells were Dogiel type II putative SNs (SN1 and SN2) and the 5-HT–containing descending interneurons (DIN1, DIN2). Most of the smallest classes of cells were EMNs or IMNs.

AIN, ascending interneuron; DIN, descending interneuron; EMN, excitatory motor neuron; HuCD, Hu C or D protein; IMN, inhibitory motor neuron; SN, sensory neuron.