Single spike mutation differentiating XBB.1 and XBB.1.5 enhances SARS-CoV-2 cell-to-cell transmission and facilitates serum-mediated enhancement - Criscuolo, Elena; Giuliani, Benedetta; Castelli, Matteo; Cavallaro, Mattia; Sisti, Sofia; Burioni, Roberto; Ferrari, Davide; Mancini, Nicasio; Locatelli, Massimo; Clementi, Nicola (Frontiers in Immunology, 2024)