INCLUSION CRITERIA:
Age 18-60.
Must meet same criteria as that of a volunteer blood donor.
EXCLUSION CRITERIA:
History of hepatitis.
History of intravenous use of illicit drugs.
History of activities that increase the risk of exposure to HIV or hepatitis viruses.
Confirmed positive test for HIV
Inability to tolerate general anesthesia.
Obesity.
Hypertension.
Asthma.
Diabetic patients will be excluded.
Pregnant patients will be excluded.