PCP can enhance dendritic cells to present the HBsAg peptide.

Aim: To investigate the influence of paraclorophenol (pCP) on dendritic cells loading and presenting HBsAg from peripheral blood monocytes of healthy volunteers identified as hepatitis B vaccine nonresponders.

Methods: The density gradient centrifugation was performed to isolate mononuclear cells from 10 hepatitis B vaccine nonresponders. The adherent monocytes were incubated with HBsAg adding rhGM-CSF and rhIL-4 in the presence of absence of pCP for 7 days.