MYC and B-cell non-Hodgkin lymphoma: Eμ-MYC transgenic mice develop aggressive pre-B sIgM− or sIgM+ B cell lymphomas within the first year of life.20Eμ-MYC mice harboring A1 knockdown (referred to as DT-A1 mice) did not show differences in disease-free survival when compared with single transgenic Eμ-MYC or Eμ-MYC mice expressing the control miR-shRNA (DT-FF mice).