31. Two apparent subtypes of spiral ganglion cells exist. 32. Oncomodulin promotes axon regeneration in retinal ganglion cells 33. The retinohypothalamic tract consists of retinal ganglion cells . 34. Destruction of ganglion cells gives the chance to their neighboring cells to extend their dendritic projections. 35. Following intravitreal injection, only AAV serotypes 2 and 8 were capable of transducing retinal ganglion cells . 36. The frequency dependence of the phosphene strength can also be explained by retinal ganglion cell dynamics. 37. The SCN receives input from specialized photosensitive ganglion cells in the retina via the retinohypothalamic tract. 38. With large amounts of mitochondria concentrated in the retinal ganglion cells , this presents a potential vulnerability. 39. Photosensitive ganglion cells contain the photopigment melanopsin. 40. A third class of mammalian photoreceptor cell was discovered during the 1990s : the photosensitive ganglion cells .
