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. 2009 Oct 21;47(12):3902–3906. doi: 10.1128/JCM.00072-09

TABLE 4.

Distribution of P. gingivalis and S. cristatus in subgingival plaques

Patient No. of bacterial cells/100 ng DNA/samplea
S. cristatus P. gingivalis
1 53 2,626
2 462 1
3 207 7
4 0 1,862
5 660 2
6 12 220
7 518 12
8 105 1,302
9 707 160
10 1,239 7
11 103 20
12 3,157 100
13 289 1,220
a

The numbers of P. gingivalis and S. cristatus cells were determined by using quantitative PCR with 16S rRNA and arcA-specific primers, respectively.