MYC and Burkitt lymphoma: The Eμ-myc mice carry a c-myc transgene downstream of the immunoglobulin (Ig) heavy chain enhancer Eμ (Langdon, 1986; Adams et al., 1985), which functionally resembles the Ig-MYC translocations that occur frequently in Burkitt’s lymphomas (Tagawa et al., 2007).