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Figure 3 | Cancer Cell International

Figure 3

From: Lowering the apoptotic threshold in colorectal cancer cells by targeting mitochondria

Figure 3

Cytochrome c oxidase activity. 2 × 104 HT 29 cells were treated with 10 μg/ml of doxycycline over a period of 4 days and staining for cytochrome c oxidase activity was performed as mentioned in methods. The brown staining is indicative of cytochrome c oxidase activity, while purple staining is indicative of cell nucleus. Representative micrographs of six independent experiments are shown. Scale bar equals 20 μM.

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