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  • Cancer cells send out ‘drones’ to battle the immune system from afar

    Small vesicles released by tumor cells may enable clinicians to track patient responses to immunotherapies.
    Guo cancer drones
    Like drones heading for battle, cancer cells emit vesicles containing immunity-suppressing proteins to tamp down T cell responses at sites throughout the body. (Image: Kelsey Burke)

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  • A world shaped by water and access
    Three people test water below a sand dam.

    Griffin Pitt, right, works with two other student researchers to test the conductivity, total dissolved solids, salinity, and temperature of water below a sand dam in Kenya.

    (Image: Courtesy of Griffin Pitt)

    A world shaped by water and access

    Griffin Pitt’s upbringing made her passionate about water access and pollution, and Penn has given her the opportunity to explore these issues back home in North Carolina and abroad.

    Oct 8, 2025