title: Peak density, size and regional distribution of ganglion cells in the retina of the fur seal Callorhinus ursinus.
abstract: The total number, size, topographic distribution and peak density of ganglion cells were studied in retinal wholemounts of the fur seal, Callorhinus ursinus. The cell distribution showed a distinct zone of high ganglion cell density. It was located in the temporal retinal quadrant, near the horizontal meridian, 10-12 mm (25-31 degrees) from the optic disk. The peak cell density in this zone was 812-1332 cells/mm2 (mean 1053 cells/mm2), i.e. 125-205 cells/deg2 (mean 162 cells/deg2). These data predict a retinal resolution of 5.6-7.1 cycle/deg. The ganglion cell soma size ranged from 10 to 50 microns. Cell size histograms were bimodal in shape with modes below and above 30 microns.
authors.affiliation: A.N. Severtsov Institute of Evolutionary Morphology and Ecology of Animals, USSR Academy of Science, Moscow.
authors.forename: A M
authors.initials: AM
authors.lastname: Mass
authors.forename: A Y
authors.initials: AY
authors.lastname: Supin
mesh_terms: D000818:Animals; D002452:Cell Count; D005260:Female; D046069:Fur Seals / Q000033:anatomy & histology*; D012160:Retina / Q000166:cytology*; D012165:Retinal Ganglion Cells / Q000166:cytology*