Figure 2From: DNA-directed immobilization of horseradish peroxidase onto porous SiO2 optical transducersEOT changes upon biofunctionalization of porous SiO 2 with HRP through DDI. (a) Complete biofunctionalization process; hybridization of the complementary strand modified with HRP (HRP-cD1) to the anchored strand (aD1). (b) Control experiment; non-modified HRP attachment to aD1 modified surface.Back to article page