Figure 1From: Quantitative image analysis of immunohistochemical stains using a CMYK color modelIHC spectral characteristics. The color bars designated 1–7 display representative IHC staining, from least to most, using AEC, DAB, or NovaRed with hematoxylin counterstained nuclei. Graphs on sequential rows depict the IHC colors defined by the individual channel intensity of CMYK, RGB, nRGB and HSL color model.Back to article page