Charlot123
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I can't pretend to understand all of the DNA issues, but from the little I DO understand, that sounds exactly correct. Any DNA recovered could be a mix of any number of people. Libby's purse? It could have touch DNA from ten people, if I understand this, and that's a lot of mixed-up data to try to make sense of. In the lab I worked in, sample DNA was very carefully kept from contamination with other DNA. I can't imagine how hard it must be for a police lab to do that with multiple unknown sources all mixed together.
The opposite might be true. If there are lots of DNAs on Libby’s purse, but only one is unaccounted for, that one could be of interest. But from what I understand, if with all the money and prize funds, since 2018, nothing has moved with the DNA, we have to put it on the back burner.