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. 2004 Feb 3;5:10. doi: 10.1186/1471-2164-5-10

Figure 1.

Figure 1

Mean spot intensity versus PMT voltage for three scanners of two different brands, ScanArray4000 I (A), ScanArray4000 II (B), and GenePix4000B (C). Three representative spots are presented, one with high intensities (●, ○), one with intermediate intensities (■, □), and one with low intensities (▲, △). The intensities of the green and red channel are represented by closed and open symbols, respectively. The PMT voltage is given in % of maximum voltage for ScanArray4000 and in voltage for GenePix4000B.