Rethinking Cancer: Could Microbial DNA in Your Blood Be a Sign of Cancer? A new understanding of the way microbial populations shift with cancer could open a completely new therapeutic avenue. According to the researchers, one advantage of cancer detection based on microbial DNA, compared to circulating human tumor DNA, is its diversity among different body sites. Human DNA, in contrast, is essentially the same throughout the body. Knight Lab June 3, 2020 0 Share