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Reoxygenation reverses EMT. MDA-MB 468 cells were cultured in 21% O2 (N) or 1% O2 (H) for 48 h. Some cells were cultured in 1% O2 for 48 h and then exposed to 21% O2 for an additional 48 h (Re-O2). The cells were immunostained to detect E-cadherin (red channel), vimentin (green channel), and DAPI (blue channel). Bar, 15 μm.
