Figure 2From: A direct detection of Escherichia coli genomic DNA using gold nanoprobesa) Silver enhanced agarose gel showing AuNP- oligo probe hybridization. Lane 1: AuNP- oligo probe alone. Samples with increasing concentration of complementary DNA (Lane 2: 2.8 ng, Lane 3: 5.6 ng, Lane 4: 11 ng, Lane 5: 28 ng, Lane 6: 59 ng). Lane 7: 61.9 ng of non complementary DNA. b) Corresponding results recorded visually after acid challenge.Back to article page