title: Further studies on the variables affecting rubella haemagglutination and haemagglutination-inhibition tests.
abstract: The different factors affecting rubella HA or HI were studied and the occurrence of rubella HA, also in absence of gelatine, albumin and Ca++, was shown. The influence on HA and HI titers of different systems--diluent and indicator erythrocytes--was also discussed.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology; D005780:Gelatin / Q000494:pharmacology; D006384:Hemagglutination / Q000187:drug effects; D006385:Hemagglutination Inhibition Tests / Q000379:methods; D006386:Hemagglutination Tests / Q000379:methods; D006801:Humans; D012409:Rubella / Q000175:diagnosis*
chemical_list: D005780:Gelatin; D002118:Calcium