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    Penn Today

    Tracking the earliest steps in parasite infection (link is external)

    The parasite Cryptosporidium, a leading global cause of diarrheal diseases in children, injects host cells with a cocktail of proteins. Using powerful video microscopy, Penn Vet researchers tracked the process…

    The search for the culprit behind songbird deaths (link is external)

    Across the United States, songbirds are dying from a mysterious condition. Working with long-established partners, Penn Vet researchers are striving for a diagnosis.

    Protein’s ‘silent code’ affects how cells move (link is external)

    The protein actin is ubiquitous and essential for life. In mammals, every cell expresses two of its forms, beta-actin and gamma-nonmuscle-actin. Despite having distinct roles, the two forms are nearly…

    With remarkable similarities to MS, a disease in dogs opens new avenues for study (link is external)

    The canine disease granulomatous meningoencephalomyelitis (GME), the most common neuroinflammatory disease that affects dogs, shares key features of its pathology and immunology with multiple sclerosis (MS), according to a new…

    Pinpointing how cancer cells turn aggressive (link is external)

    Penn scientists have developed a new method for tracing the lineage and gene expression patterns of metastatic cancer at the single-cell level.

    Blocking viruses’ exit strategy (link is external)

    The Marburg virus, a relative of the Ebola virus, causes a serious, often-fatal hemorrhagic fever. Transmitted by the African fruit bat and by direct human-to-human contact, Marburg virus disease currently…

    Leaky blood-brain barrier and schizophrenia (link is external)

    The blood-brain barrier keeps out anything that could lead to disease and dangerous inflammation—at least when all is functioning normally.

    With impressive accuracy, dogs can sniff out coronavirus (link is external)

    Many long for a return to a post-pandemic “normal,” which, for some, may entail concerts, travel, and large gatherings. But how to keep safe amid these potential public health risks?

    Turning back the clock on a severe vision disorder (link is external)

    Gustavo Aguirre and William Beltran, veterinary ophthalmologists and vision scientists at the University of Pennsylvania School of Veterinary Medicine, have studied a wide range of different retinal blinding disorders. But the one caused by…

    From animals to people and back again (link is external)

    Last month, it was gorillas. Before that, it was mink. And earlier still, tigers and lions. All of these species have been confirmed to have had a diagnosis of COVID-19,…