Author explores the fascinating world of shed skin cells and DNA fragments in air and dust, highlighting the potential for forensic applications in criminal investigations. Studies show that indoor dust contains human DNA that can be used for allele calls in STR analysis. By analyzing air and dust samples from various locations in a building, researchers developed methods to isolate and analyze human DNA. Results show differences in DNA quantities and mixtures between air and dust samples. Success rates for identifying known occupants and non-occupants varied across different environments. The study provides valuable insights into the use of air and dust samples in forensic investigations.
https://www.nature.com/articles/s41598-023-46151-7