NewslettersHuman Immunology NewsImmune Regulation News Lysosomal Acidity and Cathepsin L Activate Eosinophils via ARG1-Mediated Arginine Metabolism in Allergic Airway Inflammation By Noshin Noorjahan - November 25, 2025 0 63 Scientists demonstrated that lysosomal acidity and cathepsin L activity in eosinophils are elevated in asthmatic patients and mouse models. [Nature Communications] Full Article