Fig. 1From: Degeneration of human photosensitive retinal ganglion cells may explain sleep and circadian rhythms disorders in Parkinson’s diseaseMelanopsin retinal ganglion cells in the human retina. a Diagram showing the structure and classification of mRGC depending on their soma location and dendrites stratification in IPL S1 or S5. b, c Immunostaining of human melanopsin using the DAB method in flat wholemount retinas of control (b) and PD (c) subjects. Scale bar, 50 μmBack to article page