Fig. 6From: The effect of 2D and 3D cell cultures on treatment response, EMT profile and stem cell features in head and neck cancerTUNEL staining of HNSCC tumor spheroids. Cancer cells within the spheroids are stained with cytokeratin (red). TUNEL positive apoptotic cells (green) are detected at 7 days after treatment with cisplatin or cetuximab. Nuclei are counterstained with DAPI (blue); scale bar = 100 µmBack to article page