Nonprecipitating pig anti‐dinitrophenyl antibody: Factors influencing the conversion into precipitating antibody

A high affinity nonprecipitating anti‐2,4‐dinitrophenyl (DNP) IgG antibody constitutes a major fraction of circulating anti‐DNP antibodies at the decline of the anti‐ DNP antibody response in pigs. The purified nonprecipitating antibody forms exclusively soluble complexes with DNP‐PSA (pig serum albumin) or DNP‐PGG (pig IgG). The binding sites are accessible to large ligands; one antibody molecule can combine with two molecules of DNP‐PSA simultaneoulsy.

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