Neurofilament light chain may serve as a cross-species blood biomarker to assess aging and predict mortality. - Bergmann, Carina; Häsler, Lisa M.; Lambert, Marius; Kaeser, Stephan A.; Schultz, Stephanie A.; Riond, Barbara; Weiss, Marco; Balz, Martina; Knauf-Witzens, Tobias; Jucker, Mathias (PLoS Biology, 2026)