HSP90B2P and neoplasm: Together with stress proteins like heat-shock proteins (HSP) induced on the surface or released by the tumour cells after PDT and the dead tumour cells themselves, these cytokines may promote DC maturation (Gollnick et al, 1997; Dolmans et al, 2003; Jalili et al, 2004; Korbelik et al, 2005; Castano et al, 2006).