* Prior therapy (other than steroids or stereotactic biopsy) or concomitant immunotherapy.
* Pregnant or breast-feeding during the study period.
* Patients with an active infection, or febrile within 24 hours of surgery.
* Patients with inflammatory bowel disease, systemic lupus erythematosus, rheumatoid arthritis, or other autoimmune disease.
* Patients with history of or active hematologic or bone marrow diseases, including but not limited to diagnosed lymphomas, leukemias, sickle cell or other anemias not associated with their current condition or polycythemia vera.
* Prior bone marrow harvests preceding this study.
* Patients with known or suspected immunodeficiency or human immunodeficiency virus (HIV).
* Hematocrit < 24 % pre-operatively.
* Patients with a serious active infection or other serious underlying medical conditions that would impair the ability of the patient to receive protocol treatment or comply with protocol.