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FIGURE 3. Slopes of regression line through SUVs for lung, bone marrow, liver, and tumor. Each symbol represents slope of line of best fit through 6 data points for unaffected lung, liver, or tumor. Open circles represent slopes that were not significantly different from zero; asterisks represent slopes different from zero at least at 5% level. Note that significance depends on both magnitude of slope and spread of underlying data; thus, open circles and asterisks may overlap. NS = not significant.
