Assertion: bone marrow's cell | /r/HasProperty | purified in present invention
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text: As more specifically indicated below in Example 1, the marrow-derived mesenchymal cells isolated and purified in the present invention were derived from bone marrow attained from a number of different sources, including plugs of femoral head cancellous bone pieces obtained from patients with degenerative joint disease during hip or knee replacement surgery, and from aspirated marrow obtained from normal donors and oncology patients who have marrow harvested for future bone marrow transplantation.