. Author manuscript; available in PMC: 2012 Jul 13.

Published in final edited form as: Nano Lett. 2011 Jun 6;11(7):2678–2683. doi: 10.1021/nl200858y

Table 2.

Average signal enhancements due to gold labeling.

		incubation 1	incubation 2
mass of gold taken up per cell (pg)		0.45 ± 0.09	0.76 ± 0.11
average number of nanoparticles per cell	10 nm	44,600	75,200
average number of nanoparticles per cell	50 nm	356	602
change in signal per pellet (%) ^a	original image	1.3 ± 4.4	1.1± 3.0
change in signal per pellet (%) ^a	processed image	1.6 ± 0.3	4.4 ± 0.8
signal enhancement per 1 pg of gold taken up per cell (%)	original image	2.9 ± 9.8	1.4 ± 3.9
signal enhancement per 1 pg of gold taken up per cell (%)	processed image	3.6 ± 0.7	5.7 ± 1.1
approximate potential signal enhancement for a pellet of 10⁷ cells (%)		11 ± 2	17 ± 3

All enhancements are reported in logarithm scale.