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HCPT treatment increases autophagy in A549 cells. Cyto-ID staining of A549 cells exposed to (0, 50, 200 and 400 µM) HCPT. Hoechst 33342 dye stained the nucleus (blue), Cyto-ID stained the autophagic cells (green). Magnification, ×40; n=8. HCPT, hydroxycamptothecin; RAPA, rapamycin.
