quantitative agglutination , precipitation and bactericidal comparisons between ( a ) r-absorbed anti-s serum and unabsorbed anti-s serum and ( b ) anti-s serum and anti-r serum indicate that the agglutinogen is a separate antigen , and the agglutinin a separate antibody , taking no part in the bactericidal action of the antiserum .
C0003241
antibody
C0020960
antiserum