Mature Rod Bipolar Cells (INL)

Bipolar cells are interneurons located in the inner nuclear layer (INL) of the retina, mainly in the center of the INL. They act, directly or indirectly (via amacrine cells), by transmitting signals from the photoreceptors to the ganglion cells. There is one type of rod bipolar cell which functions as an On bipolar cell. The axons of rod bipolar cells run through the inner plexiform layer (IPL) and the axon terminals are located at the border between the IPL and the ganglion cell layer.