Inclusion Criteria:

- Patients who have undergone an autologous stem cell transplant for the following
diseases:

- Acute Myeloid Leukemia

- Non-Hodgkin's Lymphoma

- Hodgkin's Disease

- Multiple Myeloma

- Age 13 - 70 years old

- Able to give informed consent

- Hepatic and renal function: bilirubin less than or equal to 2x normal limits, AST
and ALT less than or equal to 2x normal limits, serum creatinine less than or equal
to 1.5x normal

- ECOG Performance Status less than or equal to 1 (at planned time of transplantation)

- Patients with no active infection

Exclusion Criteria:

- Patients who have not recovered sufficiently from the side effects of the autologous
transplant (i.e. have > grade 2 toxicity in any organ system)

- Patients who have insufficient engraftment parameters according to the following
criteria: WBC < 2,500 /mm3 and platelets < 50,000/mm3

- Radiation therapy, chemotherapy, or immunotherapy beginning one week before NK-cell
infusion and lasting 2 weeks after NK-cell infusion.

- Intrinsic impaired organ function (as stated above).

- Physical or psychiatric conditions that in the estimation of the PI or designee place
the patient at high-risk of toxicity or non-compliance.

- Uncontrolled, life-threatening infections at the time of infusion.

- Concurrent treatment with corticosteroids and/or other immuno-suppressive drugs.