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The reactivity of fractions from DEAE-Sepharose to anti-B. henselae IgM antibody. The sonicated B. henselae whole-cell proteins were processed by DEAE-Sepharose Fast Flow ion-exchange chromatography. The profiles of the protein concentrations (conc) (optical density [OD] at 280 nm) and reactivity to anti-B. henselae IgM antibody are depicted by dashed and solid lines, respectively.
