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Gallbladder, epithelium – A faint cytoplasmic granular apical Melanoma gp100 immunostaining can be seen in gallbladder epithelium (tolerable antibody cross-reactivity). |
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Gallbladder, epithelium – Melanoma gp100 negative gallbladder epithelium (In this tissue, a faint cytoplasmic granular apical Melanoma gp100 immunostaining can be found in a fraction of cases. This reflects a tolerable antibody cross-reactivity). |
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Heart muscle |
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Ileum, mucosa |
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