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. 2018 Feb 21;13(2):e0190893. doi: 10.1371/journal.pone.0190893

Fig 5. ATP-induces an increase in extracellular H+ flux at the outer plexiform layer (OPL) in retinal slices that is markedly reduced by PPADS and suramin.

Fig 5

(A) Retinal cross-section of a tiger salamander retina; red box highlights the outer plexiform layer (OPL). (B) A representative trace showing the response observed to application of 100 μM ATP from an individual self-referencing recording from a retinal slice with the microelectrode positioned just above the OPL; asterisk indicates a background control reading taken 600 μm above the retinal slice. (C) Mean data from eight slices. ATP induced a significantly smaller increase in extracellular H+ flux in the background of suramin and PPADS than it did in plain Ringer’s solution.