Figure 4.

Quantitative detection of CTCs targeting human Alu-sequences. 1 to 100,000 human cancer cells were spiked into 200 μl of tumour-free murine blood. DNA was isolated and qRT-PCR was performed targeting human Alu-sequences. As little as 1 human cell could be detected before negative controls. Measurements were done in triplicates (n.d. = not defined).

Gorges et al. BMC Cancer 2012 12:178   doi:10.1186/1471-2407-12-178
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