Sentences with phrase «human contamination»
Without such data it is impossible to rule out the possibility that the ancient Australian sequences result from modern human contamination of the bone during handling over the years, complicated by DNA damage.
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They also found significant human contamination immediately after a weekend jazz festival, whereas testing by conventional methods yielded a much weaker signal after a time lag of a couple days.
In order to prevent human contamination, it is important to wash hands frequently after handling felines.
«At this point, no one has defined what the allowable levels of human contamination are,» Rucker says.
Before entering, everyone's briefed on how to avoid touching the stalactites and stalagmites to limit human contamination.
Nuclear data from the HST femur would be pivotal in assessing its genomic relationships with Neanderthals, Denisovans and modern humans, but it is extremely challenging to retrieve nuclear DNA from HST due to poor preservation and high levels of modern human contamination.
These different potential vectors of human contamination will lead to data with different characteristics.
«Our method is more sensitive to human contamination than those fecal indicator tests are,» Dubinsky said.