Methods are provided for producing a plurality of antibody species in a single animal, comprising delivering a plurality of antigen species to a single animal, where each antigen species is delivered to the animal at an anatomically distinct location. Also provided are methods for generating an immune response in an animal, where each antigen species is delivered to the animal at an anatomically distinct location, under conditions in which the animal produces a plurality of antibody species, where each antibody species specifically binds to a different antigen species among the plurality of antigen species.
