BCR ligation induced by IgM stimulation results in gene expression and functional changes only in IgVH unmutated chronic lymphocytic leukemia (CLL) cells - Anna Guarini; Sabina Chiaretti; Simona Tavolaro; Roberta Maggio; Nadia Peragine; Franca Citarella; Maria Rosaria Ricciardi; Simona Santangelo; M Marinelli; Maria Stefania De Propris; Monica Messina; Francesca Romana Mauro; et al. (2008)