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CD3 staining of DFT2_RVT1, DFT2_SNT2 DFT2_818T1, DFT2_TD547T1, DFT2_523T2 and DFT2_812 tumours. CD3 positive cells are indicated by arrows. DFT2_SNT2, and DFT2_547 are CD3 negative. Scale bars represent 50 μm. Positive cells for each marker are stained brown, nuclei are stained blue.
