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Extracting DNA from the air – DNA evidence of human occupancy in indoor premises by punnerud

Extracting DNA from the air – DNA evidence of human occupancy in indoor premises by punnerud

Extracting DNA from the air – DNA evidence of human occupancy in indoor premises by punnerud

6 Comments

  • Post Author
    dc396
    Posted March 16, 2025 at 12:31 am

    https://www.imdb.com/title/tt0119177/ was conservative. Great movie though.

  • Post Author
    treetalker
    Posted March 16, 2025 at 1:35 am

    From the abstract:

    > Detectable levels of DNA were also observed in air and dust samples from ultra-clean forensic laboratories which can potentially contaminate casework samples.

    Great news for criminal defense attorneys.

  • Post Author
    steve_adams_86
    Posted March 18, 2025 at 6:37 am

    At work we do this with DNA floating around in the ocean (have to track down all those nasty invasive crabs) but I wouldn’t have guessed we could do this with the air around us as well. That’s so cool.

    Maybe we should spin up an air-based version for the office to keep track of who’s in coming to work the most

  • Post Author
    a_bonobo
    Posted March 18, 2025 at 8:09 am

    This is a slightly older paper, note that air environmental DNA now has progressed a lot, especially for species mapping.

    Here's a cool recent paper showing you can extract DNA of local species from spider webs, by sequencing DNA stuck to spider webs from next to a zoo
    https://www.sciencedirect.com/science/article/pii/S258900422…

  • Post Author
    h1fra
    Posted March 18, 2025 at 9:13 am

    I have always wondered why DNA is an accepted evidence. It's so easy to contaminate a crime scene or bring someone else hair, skin cells, etc by mistake.

  • Post Author
    rgrieselhuber
    Posted March 18, 2025 at 11:58 am

    So, DNA shedding basically?

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