Influence of pH and ionic strength on LPS binding to casein hydrolysate (hCAS)-coated plates.

<p>FITC-LPSs from <i>E</i>. <i>coli</i> serotypes O111:B4 and O55:B5, diluted at 5 μg/ml in PBS-EDTA (pH 7.2) and acetate buffer-EDTA (pH 5.6) prepared 0.15 M, or the same buffers containing 1M NaCl, were added to hCAS-coated plates.