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Measurement of HLA-DQ2 surface expression on HLA-negative K562 erythroleukaemic cell line (a) (mean fluorescence 1.248) and B cells from a coeliac disease patient homozygous for HLA-DR3, -DQ2 (b) (mean fluorescence 14.14) using anti-DQ (SPV-L3; Serotec), and FITC-conjugated goat anti-mouse (Becton Dickinson) MoAbs, by FACS analysis.
