Serum from 28 clinically healthy cats was subjected to agarose gel electrophoresis and the migration distance relative to albumin was determined. The reference values for the relative and absolute concentrations of each protein fraction were determined and compared to previous reports. The immunoelectrophoretic, crossed immunoelectrophoretic and crossed line immunoelectrophoretic pattern, of a pooled sample of serum from clinically normal cats was determined. The cross-reactivity between goat and/or rabbit monospecific antisera to human proteins and feline serum was determined using immunoelectrophoresis and crossed-line absorption immunoelectrophoresis. Feline alpha-2-macroglobulin, haptoglobin, B1C-globulin, IgG, albumin and ceruloplasmin cross reacted strongly with the monospecific antisera. Alpha-2-macroglobulin migrated anodal to haptoglobin. Lipoproteins and ceruloplasmin were studied using staining procedures described in man. Feline transferrin was precipitated with Rivanol.
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