The corn proteins were supposed to be completely hydrolyzed (broken down) to make them easier for babies to digest, but they weren’t broken down very much. . .
Frisner, H., Rosendal, A., and Barkholt, V. 2000. Identification of immunogenic maize proteins in a casein hydrolysate formula. Pediatric Allergy and Immunology. 11(2): 106-110.