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106 CHAPTER 6
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Figure 6.5 Probability that a line will be in a particular stage at age 80. Pa-
rameters for the panels here from top to bottom match the curves from top to
bottom in Figure 6.4. The expected number of lines in each stage is p i L, where
p i is the probability that a line is in the ith stage, and L is the number of lines.
7
If the number of lines in an individual tissue is L = 10 , then, on a logarithmic
scale, the expected number of lines in each stage is log 10 (p i L) = log 10 (p i ) + 7.
