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In a lab in Amsterdam, arachnophobes have volunteered to encounter their eight-legged nemeses to help researchers hoping to conjure and obliterate fear memories. These studies, as well as new understanding of overlooked brain regions, are revealing how fears linked to PTSD or phobias work, and how they may be treated. […]

Exposure to SARS-CoV-2 by infection or vaccination generates immune cells that provide long-term immunity. These long-lived immunological memory T cells play a key role in preventing severe cases of Covid-19. Researchers at the University of Zurich have now discovered how these memory T cells form. Many questions about how exposure […]