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. 2023 Oct 23;10:106. doi: 10.1186/s40634-023-00672-2

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Fig. 3 — Immunofluorescent staining against lubricin (green) and type II collagen (red) in the articular cartilage sections. Lubricin-positive cells were counted. Values are expressed as mean ± standard error of the mean (SEM), n = 4; * = p < 0.05. (Scale bar: 100 μm)