Abstract
This study aimed to isolate IgG from chicken serum using a combination of coconut caprylic triglyceride and ammonium sulfate precipitation techniques. This study used serum from chickens that had previously been vaccinated repeatedly using a commercial rabies vaccine. Initially, the serum was treated with 2.5% coconut caprylic triglyceride, followed by serum IgG precipitation using 40% ammonium sulfate. The 10% SDS-PAGE analysis showed that a protein of about 190 kDa with a purity above 95% was successfully isolated. Whether the isolate protein is IgG and specific to rabies antigen still needs to be investigated further.
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