The Effect of Lactoferrin and Dosing Regimen on Iron Absorption From a Maize-based Porridge in Kenyan Infants

1.41 g of apo-Lactoferrin will be given together with 1.42 mg FeSO4 (0.08 mg of iron naturally in apo-Lf \[total of 1.5 mg iron\]) in a maize porridge (extrinsically labeled)

1.41 g of holo-Lactoferrin (intrinsically labeled with 1.5 mg 57Fe) will be given together in a maize porridge

1.5 mg FeSO4 as 54Fe in a maize porridge

10 mg 56Fe + 2 mg 54Fe Is the 1. FeSO4 meal in maize porridge

10 mg 56Fe + 2 mg 57Fe Is the 2. FeSO4 in maize porridge with a 1 day washout period

10 mg 56Fe + 2 mg 58Fe Is the 3. FeSO4 in maize porridge with a 2 day washout period