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Figure 1 | BMC Bioinformatics

Figure 1

From: Quality assessment of microarrays: Visualization of spatial artifacts and quantitation of regional biases

Figure 1

The advantages of using a reference to highlight regional biases. Figure 1A shows log2 spot ratios at a constant intensity. Red corresponds to a log ratio of greater than 0.5; yellow to a log ratio of 0, and green to a log ratio of less than -0.5. Figure 1B shows the log2 ratios for the same slide relative to the averages of the log2 ratios across all the slides. Figure 1C shows the log ratios for the same slide after background subtraction. The right portion of the bottom row in each print-tip group was spotted with buffer only.

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BMC Bioinformatics

ISSN: 1471-2105

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