Figure 4.

ELISA of GNPs using anti-endotoxin IgG. ELISA was performed by using anti-endotoxin IgG against various sizes of GNPs synthesized in the lab. Lipopolysaccharide (LPS) served as a positive control, while BSA served as a negative control

Chen et al. Nanoscale Research Letters 2009 4:858-864   doi:10.1007/s11671-009-9334-6