Figure 2.

Mutation frequencies. (mutations per cloned sequenced base) of fixed DNA were 3- to 4-fold higher than fresh DNA. Mutation frequencies did not significantly change with PCR product size or fixation intervals. (N refers to numbers of sequenced PCR clones)

Quach et al. BMC Clinical Pathology 2004 4:1   doi:10.1186/1472-6890-4-1
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