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Figure 2 | Theoretical Biology and Medical Modelling

Figure 2

From: Tracking tumor evolution via prostate-specific antigen: an individual post-operative study

Figure 2

Logarithmic plot of PSA score vs. time. PSA values plotted on a logarithmic scale against (a) linear time and (b) time on a logarithmic scale. Note that the straight line fit in panel (a) signals exponential growth, while that in panel (b) indicates "power-law" growth (see text). The vertical size of the first four points indicates the estimated error, while in the subsequent points the error bars are smaller than the size of the plotted points.

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