Electron microscopic evidence of a ventronasal to dorsotemporal variation in fiber size in pigeon optic nerve.


Using a uniform sampling method, electron-microscopic examination of pigeon optic nerve revealed a dorsotemporal to ventronasal gradient in mean fiber size. In the dorsotemporal region small, myelinated axons (mean diameter = 0.87 micrometer, S.D. = 0.27) were predominant. Also unique to this region were scattered clusters of fine, unmyelinated fibers. A… (More)


  • Presentations referencing similar topics