Figure 5

P2X4−/− mice exhibit normal voiding behaviour by void spot assay. Representative filters showing urine spots under UV light from a wild type mouse (A) and a P2X4−/− mouse (B). Quantitative data are shown in (C) and indicates P2X4−/− mice have normal voiding volume, spot number, and spot size. The square at bottom left of panel (A) (surface area of 400 mm2) serves as a size standard.