New York [US], February 4 (ANI): For decades, a small group of medical researchers have been studying a biochemical, DNA tagging system, which switches genes on or off. Many have studied it in bacteria and now some have seen signs of it in, plants, flies, and even human brain tumours. According to a new study by researchers at the Icahn School of Medicine, there may be a hitch: much of the evidence of presence of the DNA tagging system, in higher organisms may be due to bacterial contamination, which was difficult to spot using current experimental methods.
\
\
