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Figure 2 Relation between the expression level of inositol 1,4,5 trisphosphate receptor (IP3R ) protein in the right atrium of all patients and the magnitude of left atrial dimension (LAD) (i), pulmonary capillary wedge pressure (PCWP) (ii) and right atrial pressure (RAP) (iii). The expression level was significantly greater in those patients with a higher LAD, PCWP or RAP. Data are mean ± SD.