Figure 1: Fluorescence micrographs of the ganglion cell layer of the retina (a), cerebral cortex (b), and cerebellum (c) from the Australian Shepherd that was euthanized after exhibiting the neurological signs described in the text. In the cerebellum, autofluorescent material was most prominent in the Purkinje cell (p) and granular layers (g), with lesser accumulation in the molecular layer (m). Bar in (a) indicates magnification of all 3 micrographs.