Table.

Stereological Parameters Used for Cell Counting

Area	Obj.	B (μm2)	H (μm)	Sampling grid (μm)	t (μm, mean ± SEM)	Σ OD	Σ CN	CE
Hippocampus	100×	900	9	125 × 90	19.9 ± 0.8	291	655	0.042
Spinal cord	100×	2500	12	150 × 125	20.0 ± 0.3	183	157	0.082

B and H, base and height of the optical disectors; CE, average predicted coefficient of error of the estimated total numbers of neurons; Obj., objective lens power; t, measured average section thickness after histological processing; Σ CN, average number of counted neurons per specimen; Σ OD, average number of optical disectors used per specimen. For methodology, see Schmitz and Hof^40,41 and Slomianka and West.⁴²