Staphylococcal Protein A

Staphylococcal Protein A is very common used product in immune assay.  We supply high quality SpA with the best price,  for the order from 10mg to gram level, please check PDF data sheet.

Gold conjugated SpA is often used to bind to human IgG, after binding to human IgG,    conjugated SpA will form SpA-gold-IgG complex, when it run over from the gold pad to nitrocellulose membrane,  the specific antibody can be captured by the antigen forming visible signal.