Fig. 1

Measurement of serum calcium, intact parathyroid hormone, and. urine calcium creatinine ratio. a Serum concentration of calcium in ATP2B1+/− mice (n = 7) and ATP2B1+/+ mice (n = 8). b Serum concentration of intact parathyroid hormone in ATP2B1+/− mice and ATP2B1+/+ mice (n = 9 for each group). c Urine calcium and creatinine were measured in ATP2B1+/- (n = 12) and ATP2B1+/+ mice (n = 11). Data are mean±SEM. t-test *p < 0.05 versus the control group, **p < 0.01 versus the control group. ATP2B1±mice exhibited hypocalcemia and decreased intact-PTH. Urine calcium creatinine ratio was increased in ATP2B1±mice