File:Mesenchymal-stem-cell-with-more-lightly-stained-nucleus-in-bone-marrow-central-to-differentiating-preosteoblastic-stem-c.jpg
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Mesenchymal-stem-cell-with-more-lightly-stained-nucleus-in-bone-marrow-central-to-differentiating-preosteoblastic-stem-c.jpg (600 × 559 pixels, file size: 142 KB, MIME type: image/jpeg)