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Fig. 5. The basal processes of lamprey parapinopsin-containing cells. Lamprey
parapinopsin-containing cells are connected with each other via the basal
processes and form a neuropile over a wide area in the whole-mount specimen of
the dorsal portion (arrowheads in B). Inset in A shows dye coupling found in
the UV-photoreceptor cells. B is a high magnification of the boxed region in
A. Scale bars, 50 µm.