highly significantP < 0.0005
Two immunizations of adjuvant-free or alum-emulsified immunogens consistently induced highly significant ( P < 0.0005-< 0.0001) reductions in the challenge worm burden.
Two immunizations of adjuvant-free or alum-emulsified immunogens consistently induced highly significant ( P < 0.0005-< 0.0001) reductions in the challenge worm burden.