الفهرس 
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Abstract
In the present study, we used (SPA) staphylococcal protein A and (SPG) streptococcal protein G for diagnosis of some diseases by simple slide agglutination test and also in ELISA as SPA-ELISA test. Protein A was prepared from staphylococcus aureus (Cowan 1) and protein G was prepared from streptococcus equi subsp.