. Author manuscript; available in PMC: 2021 Dec 30.

Published in final edited form as: J Comp Neurol. 2016 Feb 18;524(10):2036–2058. doi: 10.1002/cne.23930

TABLE 2.

Stereological Results for Cell Numbers, Volume, and Area in the River Hippopotamus

Nucleus examined	Total estimated population using mean section thickness	Average estimated cell volume (μm³)	Average estimated cell area (μm²)
LDT (ChAT+)	34,782	-	-
LDT (ChAT+) magnocellular	20,636	4,523.70	1,653.81
LDT (ChAT+) parvocellular	14,146	1,484.67	735.56
PPT (ChAT+)	224,796	3,210.15	1,321.67
LC (TH+)	127,752	1,644.64	680.23
Orexin (OxA+) all cells	68,398	-	-
Orexin (OxA+) magnocellular	30,194	3,737.14	1,712.09
Orexin (OxA+) parvocellular	38,204	1,851.17	907.93

Abbreviations: LDT, laterodorsal tegmental nucleus; PPT, pedunculopontine tegmental nucleus; LC, locus coeruleus complex; ChAT+, neurons immunopositive for cholineacetyltransferase; TH+, neurons immunopositive for tyrosine hydroxylase;, OxA+, neurons immunopositive for orexin-A.