Figure 2.

Endothelial cell data fitted to a biexponential decay model for patients who attended every follow-up examination and who had no episode of rejection or surgery that could affect the endothelium (n = 27). The dotted lines represent the 95% confidence interval. The coefficients are shown with their standard error (se) and corresponding P value. The fast half-life was 13.0 months, and the slow half-life was 266.5 months. The residual standard deviation was 206.0 cells/mm². The rate of cell loss represented by the slow exponential was 3.1% per year.