The existence of contaminating sequences is bigger in lower-biomass samples (like from blood or maybe the lung) than in large-biomass samples (for instance from faeces), suggesting that there is a essential tipping stage wherever contaminating DNA turns into dominant in sequence libraries. Nucleic acid isolation by organic and natural extraction https://www.facebook.com/NewTechFind/posts/pfbid0tQJ2pTCih226NmXme1cPwK1zodWnKCqJRhJPNtCR6njaaSKN3whSRye2WrpBG88hl