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        "value": "from skimage import data\nfrom skimage.color import rgb2hed, hed2rgb\nihc = data.immunohistochemistry()\nihc_hed = rgb2hed(ihc)\nihc_rgb = hed2rgb(ihc_hed)\n",
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    ".. [1] A. C. Ruifrok and D. A. Johnston, \"Quantification of histochemical",
    "       staining by color deconvolution.,\" Analytical and quantitative",
    "       cytology and histology / the International Academy of Cytology [and]",
    "       American Society of Cytology, vol. 23, no. 4, pp. 291-9, Aug. 2001."
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