Growth and Tolerance of Infants Fed Infant Formulas

Inclusion Criteria: * Singleton from full term birth with a gestational age 37-42 weeks * Birth weight \> 2490 g (\~5 lbs 8 oz) * Between 0 and 5 days of age * Smoke-free home (no smoking in the house dwelling), and mothers in the breast-fed group are prohibited from smoking during the study period * Parent(s) of formula-fed infants have elected not to breastfeed and confirm that their infant has been exclusively formula-fed since birth and confirm their intention is to exclusively feed their infant study infant formula for the duration of the study, * Parent(s) of human milk-fed infants have elected to breastfeed and confirm that their infant has been exclusively human milk-fed (not donor milk) since birth and confirm their intention is to continue to exclusively feed human milk with vitamin/mineral supplementation for the duration of the study * No administration vitamin or mineral supplements (excluding vitamin or mineral supplements containing vitamin D, if recommended by a healthcare professional), solid foods or juices to infants from enrollment through the duration of the study, unless instructed otherwise by their healthcare professional Exclusion Criteria: * Adverse maternal, fetal or infant medical history that has potential effects on tolerance, growth, and/or development * Infants using medications, home remedies, herbal preparations, probiotics or rehydration fluids that might affect gastrointestinal (GI) tolerance may not be enrolled * Treatment with antibiotics * Mother intends to use a combination of breast and formula feeding