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| Description: In darkness, rod photoreceptors release the inhibitory neurotransmitter glutamate. This inhibits bipolar cells from transmitting signals to ganglion cells which provide output from the retina to the brain. Picture Stats: Views: 226 Filesize: 253.32kB Height: 956 Width: 692 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=41341 |