MEN1 and parathyroid gland adenoma: As shown in Figure 3A, mature miR-24-1 was expressed only in MEN1 parathyroid adenoma tissues that conserved the wild-type allele (without MEN1-LOH), but not in the MEN1 parathyroid adenoma tissues that lost the MEN1 gene (with MEN1-LOH), as well as in sporadic parathyroid adenomas (Fig. 3 A).