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I have heard that our saliva contains cells. What cell types can be found in human saliva?

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    $\begingroup$ I clarified the question and vote for reopening. $\endgroup$
    – AliceD
    Commented Jan 28, 2015 at 14:06

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It contains white blood cells (leukocytes) and cells from the inner lining of the mouth (buccal epithelial cells). The DNA obtained from these cells is the basis of DNA profiling based on saliva samples.

Source: Salimetrics

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