Inclusion Criteria:  Ages 18 - 40 yrs. Body Mass Index of 20-32 inclusive  Exclusion Criteria:  Unwilling to eat animal proteins History of diabetes that requires medication for control of blood glucose History of malignancy or chemo/radiation therapy in the 6 months prior to enrollment History of gastrointestinal bypass/reduction surgery (Lapband, gastric sleeve, etc.) Pregnant females Hemoglobin less than 12 g/dL at screening Platelets less than 150,000 at screening Subjects who cannot refrain from using protein or amino acid supplements for 7 days prior to Visit 3 Concomitant use of oral or injectable corticosteroids Concomitant use of testosterone, IGF-1, or similar anabolic agent Any other disease or condition that would place the subject at increased risk of harm if they were to participate, at the discretion of the study physician