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Sodium dodecylsulfate polyacrylamide gel electrophoresis (SDS-PAGE) pattern of purified egg yolk immunoglobulin (IgY). M, protein molecular weight marker; lane 1, water soluble fraction; lane 2, IgY purified by water dilution and ammonium preciptation. The arrows indicate the heavy chain (top arrow) and the light chain (bottom arrow) of IgY
