Table 1 Expression ratios of a weak and a bright spot on the same microarray, measured with three scanners at several PMT voltages

62/62*

2.28

0.74

1.88

0.60

800/700*

1.63

0.61

56/62*

2.43

0.76

1.79

0.58

700/700*

1.68

0.55

50/62

2.15

0.74

1.49

0.61

500/700

1.58

0.47

45/62

1.26

0.95

0.43

0.71

400/700

4.98

0.47

40/62

0.55

1.41

0.16

0.76

300/700

14.14

0.98

62/56*

2.25

0.76

1.93

0.62

800/500*

1.71

0.61

62/50

2.36

0.71

2.12

0.58

800/400*

1.79

0.64

62/45

3.37

0.62

3.75

0.50

800/300

1.75

0.62

62/40

92.9

0.48

-

0.41

800/200

0.10

0.46