| http://www.w3.org/ns/prov#value | - Crime scenes without DNA evidence are common, because 1) ???[c]asual contact does not generally transfer enough DNA for analysis,??? 2) ???DNA can be removed by washing,??? and 3) ???environmental factors such as mold, heat, humidity, bacteria and sunlight can destroy DNA very quickly.???15 Further, STR testing ???is very susceptible to contamination??? from other sources of DNA.16
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