Both lines are associated with the development of hematopoietic disorders: Iμ-HA-Bcl6 (#2), a strain that develops lymphomas with features of human diffuse large B cell lymphomas (DLBCLs) [13], and Cxcr4WHIM (#3) which shows defects in lympho-hematopoiesis [14]. Here, BCL6 is linked to lymphoma.