CD79A and keratoconjunctivitis: Guinea pigs intranasally immunized with CVD 1233 (pCS4-LTK63) developed IgG (serum) and IgA (tear) antibodies to S. sonnei LPS, ETEC CS4 adhesin, and LT toxin; they were protected against keratoconjunctivitis from Shigella homologous (but not heterologous) challenge (135).