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

Fig 1. Extracellular ATP induces a significant increase in extracellular H+ flux from isolated Müller cells.

Fig 1

(A) An isolated Müller cell with a H+-selective microelectrode positioned next to the apical end of the cell. Scale bar: 20 μm; double-headed arrow depicts the direction of electrode movement as it alternately records the potential established by protons adjacent to the cell and 30 μm away. (B) Response from a single isolated Müller cell to 100 μM ATP. Top bar represents duration of drug application. Asterisk: background control readings taken 200 μm above the cell. (C) Mean data from 8 trials in response to various extracellular ATP concentrations: error bars represent SEMs; data was analyzed with a paired 2-way t-test. Bars represent mean values ± SEM.