Indeed, the overall phenotype of Dazl deficiency is more consistent and pronounced in inbred C57BL/6 mice (Lin and Page, 2005) than in non-inbred mice (Ruggiu et al., 1997, Schrans-Stassen et al., 2001, Saunders et al., 2003). The gene discussed is DAZL; the disease is hyperinsulinemic hypoglycemia, familial, 4.