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. 2021 Sep 27;10(9):619–628. doi: 10.1302/2046-3758.109.BJR-2021-0016.R1

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© 2021 Author(s) et al.

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Fig. 4 — Alkaline phosphatase (ALP) activity in osteoblasts from patients with osteonecrosis of the femoral head (ONFH). a) ALP activity and b) ALPL messenger RNA (mRNA) levels in osteoblasts obtained from the intertrochanteric region (IT) of patients with osteoarthritis (OA) or ONFH and from the femoral head (FH) of patients with ONFH, and cultured in growth medium (GM) or osteogenic medium (OM) for 12 days. The data in (b) were normalized relative to those measured in osteoblasts from IT-OA, which were given an arbitrary value of 1. *p < 0.05 between the indicated conditions, Mann–Whitney U test and paired Wilcoxon test.