Escherichia coli expressing EAST1 toxin did not cause an increase of cAMP or cGMP levels in cells, and no diarrhea in 5-day old gnotobiotic pigs.

by Xiaosai Ruan, Scott S Crupper, Bruce D Schultz, Donald C Robertson, Weiping Zhang
Published 2012-01-01

Modified Heat-Stable Toxins (hSTa) of Enterotoxigenic Escherichia coli Lose Toxicity but Display Antigenicity after Being Genetically Fused to Heat-Labile Toxoid LT(R192G)

by Weiping Zhang, Donald C. Robertson, James P. Nataro, Kristy Mateo, Chengxian Zhang, Mei Liu
Published 2011-09-01

Toxicity and immunogenicity of Enterotoxigenic Escherichia coli heat-labile and heat-stable toxoid fusion 3xSTa(A14Q)-LT(S63K/R192G/L211A) in a murine model.

by Chengxian Zhang, David E Knudsen, Mei Liu, Donald C Robertson, Weiping Zhang, STa Toxoid Vaccine Consortium Group
Published 2013-01-01