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  Human IgG1 (LA: M428L/N434A)

  $680.00
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  Human IgG1 (LS: M428L/N434S)

  $680.00
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  Human IgG1 (N434A)

  $680.00
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  Human IgG1 (T250Q/M428L)

  $680.00
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  Human IgG1 (YTE: M252Y/S254T/T256E)

  $680.00