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Effect of point mutation Arg27a to serine in B3 variable light chainregion (VL) complementarity determining region 1. Comparison of cardiolipin binding of IgG in COS-7 cell supernatants containing wild-type heavy chains expressed with B3VL or B3VLa. Presented as concentration of IgG in the supernatant versus optical density (OD) at 405 nm in the anti-cardiolipin ELISA.
