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We present a deep learning-based framework to virtually transfer images of H&E-stained tissue to other stain types using cascaded deep neural networks. This method, termed C-DNN, was trained in a cascaded manner: label-free autofluorescence images were fed to the first generator as input and transformed into H&E stained images. These virtually stained H&E images were then transformed into Periodic acid–Schiff (PAS) stain by the second generator. We trained and tested C-DNN on kidney needle-core biopsy tissue, and its output images showed better color accuracy and higher contrast on various histological features compared to other stain transfer models.
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