Assertion: vaccine's antigen | /r/RelatedTo | the pathogen
Facets:
value: in question
type: OTHER
Source sentences:
text: It also might fail for genetic reasons if the host's immune system includes no strains of B cells that can generate antibodies suited to reacting effectively and binding to the antigens associated with the pathogen.
text: A vaccine works by encouraging the creation of memory B and T cells specific for an antigen associated with the pathogen in question.