Assertion: agglutination | /r/HasProperty | inhibited by the antigen
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text: US Patent 4,184,849 (1980) describes a method for detecting antigens and antibodies in a liquid sample by carrying out an appropriate agglutination reaction and detecting the extent of agglutination, which allows determine the amount of antibodies or antigens present in the sample; two reagents are introduced into the liquid in the form of particles which agglutinate together but whose agglutination is inhibited by the antibody or the antigen possibly present.