REFINEMENT OF MUM1 EXPRESSION THRESHOLD FOR DOUBLE POSITIVE CD10+ MUM1+ DIFFUSE LARGE B CELL LYMPHOMA ALLOWS A BETTER CELL OF ORIGIN CLASSIFICATION FOR GCB SUBTYPE. (12th June 2019) - Bossard, C.; Laghmari, O.; Le Bris, Y.; Bonnet, A.; Moreau, A.; El Alami Thomas, W.; Pavageau, A.; Guerzider, P.; Maisonneuve, H.; Ruminy, P.; Bene, M.; Casasnovas, O.; et al.