Assertion: shigella | /r/HasAspect | over 25 colonisation factors
Facets:
value: for etec
type: TRANSITIVE-OBJECT
Source sentences:
text: ETEC and Shigella spp are antigenically diverse, encompassing two toxins and over 25 colonisation factors for ETEC, and 50 serotypes or subtypes for shigella, which makes the development of vaccines challenging.