Viau et al., Immunol Lett 2004
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To test this hypothesis, we investigated the potential effects of a SAg , protein L from Peptostreptococcus magnus, on antigen B cell receptor (BcR) surface expression in vitro ... These data demonstrate that SAg mediated down-regulation of the BcR expression occurs primarily as a result of BcR internalization
Ligtenberg et al., Biochem J 2004
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Despite this similar binding site, IgA did not inhibit binding of Streptococcus mutans to SAG or peptide