Dopaminergic amacrine cells in the retina of Japanese dace

The morphological and physiological identification of the cells in the inner retina of Japanese dace was made by means of intracellular single cell recording and dye injection techniques. Our flat mounts and physiological classification revealed that 97 out of 102 sample cells were amacrine cells except for 3 transient neurons possibly being ganglion cells. Only two cells were identified as interplexiform cells. The double-labeling histochemical technique showed that 17 cells including the two interplexiform cells are dopaminergic neurons. Therefore, 15 of 97 amacrine cells in dace retina were dopaminergic cells, a finding which is different from the previously published data.