Assertion: polysaccharide | /r/CapableOf | increase the specificity of the assay
Facets:
Source sentences:
text: Serum anti-pneumococcal IgG concentrations to each of the serotypes included in the vaccine were measured by an ELISA method, which included a pre-adsorption step with serotype 22F polysaccharide to increase the specificity of the assay.