| 摘要 |
The present invention is directed towards a novel composition which is a genetically distinct mutant of E. coli heat-labile enterotoxin (LT). Specifically, the mutant LT designated LT(R192G/L211A) is modified by two amino acid substitutions, i.e., the arginine at amino acid position 192 is replaced by glycine and the leucine at amino acid position 211 is replaced by alanine. The invention relates to compositions and methods for use of the novel double mutant of LT as an adjuvant.
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