Inclusion Criteria:

1. Men and women ≥ 18 years of age.
2. Have a documented symptomatic diagnosis of DDD at L1-S1 with or without stenosis and with or without up to and including Grade II degenerative spondylolisthesis.
3. May also have coexistent spinal or foraminal stenosis as confirmed by MRI or CT evaluation.
4. Must have clinical symptoms of neurogenic claudication.
5. Must have failed 6 months of nonoperative management.
6. Must be a candidate for lumbar interbody fusion in combination with posterolateral lumbar fusion with the use of autograft from the iliac crest requiring a 1 or 2-level fusion of adjacent vertebral levels between L1 and S1.
7. Must have a stable screening electrocardiogram (ECG), as determined by the investigator that would not preclude surgery.

Exclusion Criteria:

1. Is pregnant or breastfeeding.
2. Has Grade III or greater spondylolisthesis.
3. Has or is undergoing revision of a prior fusion at the involved levels.
4. Has a history of hypersensitivity or anaphylactic reaction to murine or bovine products, dimethyl sulfoxide (DMSO), or titanium.
5. Has MRI or CT that shows greater than 50% anterior translocation of cranial vertebral body or greater than 20 degree angular motion of the listhesis segment.
6. Has a history of active malignancy in the last 5 years, other than basal cell carcinoma.

7. Has osteoporosis as defined by a dual energy x-ray absorptiometry (DXA T) score of ≤ -3.5 or a history of fragility fractures or other significant bone disease contraindicating the use of spinal instrumentation.

   Note: subjects will be screened using the Simple Calculated Osteoporosis Risk Evaluation (SCORE) osteoporosis questionnaire.

8. Has a history of Paget's disease of the spine, osteomalacia, or any other metabolic bone disease.
9. Has a history of prior radiotherapy to the involved area.
10. Has received systemic corticosteroids at a dose equivalent to prednisone > 10 mg/day within 14 days prior to study procedure.
11. Has received systemic nonsteroidal anti-inflammatory drugs (NSAIDS) within 48 hours prior to study procedure, and unwilling to refrain from NSAIDS for the first 6 months following the procedure.
12. Has a positive screen for human immunodeficiency virus (HIV) antibodies.
13. Has had treatment with any investigational therapy administered within 6 months before implantation surgery. .
14. Is the prior recipient of allogeneic stem cell/progenitor cell therapy.
15. Has a body mass index (BMI) > 3.5
16. Has 20% or greater anti-human leukocyte antigen (HLA) antibody titer and/or has antibody specificities to donor HLA antigens.