| http://www.w3.org/ns/prov#value | - A ???subunit??? immunogen or vaccine is a formulation comprised of active components (e.g., adjuvant, antigen) which have been isolated from other cellular or viral components of the pathogen (e.g., membrane or polysaccharide components like endotoxin) by recombinant techniques, chemical synthesis, or at least partial purification from a natural source.
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