- a female who is pregnant, nursing, or of child-bearing potential while not practicing effective contraceptive methods. female subjects must undergo a blood pregnancy test at screening and prior to infusion. - inability to perform any of the assessments required for endpoint analysis - have known allergies to penicillin or streptomycin - have a clinical history of malignancy within 3 years (i.e., subjects with prior malignancy must be disease-free for 3 years), except curatively-treated basal cell carcinoma, squamous cell carcinoma, melanoma in situ or cervical carcinoma, if recurrence occurs; - history of drug abuse (illegal "street" drugs except for marijuana, or prescription medications not being used appropriately for a pre-existing medical condition) or alcohol abuse (≥ 5 drinks/day for ˃ 3 months), or documented medical, occupational, or legal problems arising from the use of alcohol or drugs within the past 24 months - be serum positive for hiv, hepatitis bsag or viremic hepatitis c.

- a female who is pregnant, nursing, or of child-bearing potential while not practicing effective contraceptive methods. female subjects must undergo a blood pregnancy test at screening and prior to infusion. - inability to perform any of the assessments required for endpoint analysis - have known allergies to penicillin or streptomycin - have a clinical history of malignancy within 3 years (i.e., subjects with prior malignancy must be disease-free for 3 years), except curatively-treated basal cell carcinoma, squamous cell carcinoma, melanoma in situ or cervical carcinoma, if recurrence occurs; - history of drug abuse (illegal "street" drugs except for marijuana, or prescription medications not being used appropriately for a pre-existing medical condition) or alcohol abuse (≥ 5 drinks/day for ˃ 3 months), or documented medical, occupational, or legal problems arising from the use of alcohol or drugs within the past 24 months - be serum positive for hiv, hepatitis bsag or viremic hepatitis c.