Which of the following produce the type III secretion system virulence factor?
A) E. coli O157:H7
B) Shigella
C) Salmonella
D) both E. coli O157:H7 and Salmonella
E) E. coli O157:H7, Shigella and Salmonella
E
Bloom's Taxonomy: Comprehension
Section: Bacterial Diseases of the Digestive System
Learning Outcome: 23.10
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