We used an ELISA kit to measure circulating GPHB5 levels according to the manufacturer’s instructions (Kete Biotechnology Co., Ltd, Jiangshu, China). This kit has high sensitivity and specificity for the measurement of GPHB5 without obvious cross-reactivity. The intra- and interassay coefficients of variation (CVs) were< 10% and< 8%, respectively. As previously published (23 (link)), serum adiponectin (Adipoq) concentrations were measured by an ELISA (sk00010-01, Aviscerabioscience Inc., USA), with intra- and inter-assay CVs of 4% - 8% and 8% - 12%, respectively.
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