What Is Secondary IgA

  • 6 Feb, 2012

    It is a dimer of molecular weight of 400,000 Daltons and sedimentation coefficient of 11S.It contains a glycin rich polypeptide called a secretary component or secretary piece. It is relatively resistant to digestive enzymes and reducing enzymes. It is believed to play an important role in local immunity against respiratory and intestinal pathogens.

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