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. 1998 Nov 2;143(3):601–612. doi: 10.1083/jcb.143.3.601

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SDS-PAGE (reducing conditions) of F_ab fragments prepared from IgGs directed against the EAGE peptide of β-COP, and the cytoplasmic tails of p23 or Erd2p. Note the complete disappearance of uncleaved IgG (large arrow, IgG heavy chains) and the appearance of a low molecular mass double band (small arrows) representing F_ab and F_c fragments respectively. M, molecular mass markers.