Varroa destructor weakens the external immunity of western honey bees by impairing melittin production. - Pusceddu, Michelina; Tragust, Simon; Theodorou, Panagiotis; Ciabattini Bolla, Irene; Sánchez Navarro, Jorge; Corrias, Francesco; Atzei, Alessandro; Angioni, Alberto; Floris, Ignazio; Satta, Alberto (Scientific Reports, 2025)