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Cartilage and synovitis composite scores over 12 months. (A): Cartilage morphology does not change after mesenchymal stromal cell (MSC) treatment. Fold change relative to baseline is shown. n = 4 for each MSC dose. (B): Synovitis score (shown as fold change relative to baseline) differs slightly between doses. n = 4 for 50 and n = 3 for 10 and 1 million MSC dose. No significant differences were found between baseline and 1‐year follow‐up.
