Fig. 8From: Bioengineering of air-filled protein nanoparticles by genetic and chemical functionalizationMaleimide-activated streptavidin and biotinylated horseradish peroxidase A Streptavidin estimation in GVNPs by titrating it with B4F, B Horseradish peroxidase enzyme activity in GVNPs. TF: Top fraction, SF: subnatant fractionBack to article page