Ex vivo analysis of human memory B lymphocytes specific for A and B influenza hemagglutinin by polychromatic flow-cytometry. oleh Monia Bardelli, Liliana Alleri, Francesca Angiolini, Francesca Buricchi, Simona Tavarini, Chiara Sammicheli, Sandra Nuti, Elena Degl'Innocenti, Isabelle Isnardi, Elena Fragapane, Giuseppe Del Giudice, Flora Castellino, Grazia Galli