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Detection and isolation rates of C. concisus from saliva samples in different age groups. The PCR detection rate of C. concisus from children of different age groups varied between 80 and 100%. However, the isolation rate of C. concisus from children at 3–5 years was only 33% (4/12), which was significantly lower than that in other age groups, indicating younger children were colonized with lower numbers of bacteria. Data are from Zhang et al. (2010).
