<prompt> Which of the following substances in human milk is protective against Giardiasis?LactoferrinperoxidaseBile salt stimulated lipasePABA  <response>: Lactoferrin is bacteriostatic against E.coli. Peroxidases and lipases kill bacteria. Bile salt stimulated lipases kill amoeba and Giardia. PABA is impoant in protection against malaria. Ref: Nutrition and Child Development, K.E. Elizabeth, 4th edition pg: 15 