25.0 MB (2.5 MB compressed)
3358 x 2601 pixels
28.4 x 22.1 cm ⏐ 11.2 x 8.7 in (300dpi)
DNA ILLUSTRATIONS / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY DNA ILLUSTRATIONS / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY
This illustration shows three cross-sections of the large intestine showing stages 1 to 3 of colon cancer, which was used in development studies. The RNA is extracted from a microdissection of the tumour tissue that has been fixed with formalin and embedded in paraffin. The RNA genes are marked with fluorescence and applied to a DNA microarray. Seven genes were used in the assay to determine risk of recurrence.
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