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. 2009 Jul 7;4(7):e6165. doi: 10.1371/journal.pone.0006165

Table 1. DNA degradation in a subject's first mouthwash sample when analyzed as a risk-factor for DNA degradation in their second mouthwash sample.

DNA degraded in 2nd mouthwash DNA non-degraded in 2nd mouthwash Total
DNA degraded in 1st mouthwash 9 43 52
DNA non-degraded in 1st mouthwash 28 420 448
Total 37 463 500