Click on image to view larger version.

Figure 1 The relationship between pH_i and ß_i in human ventricular myocytes obtained from unused donor hearts (open symbols) and recipient hearts with end-stage heart failure (solid symbols). Linear least squares regression analysis of all points gave the equation ß_i = –33.7·pH_i + 260.1. ß_i = intrinsic buffering power; pH_i = intracellular pH.