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Microphotographs of MDA-MB-231 by optical microscopy. MDA-MB-231 cell line in on ground control condition at 24 (a) and 72 hours (c). MDA-MB-231 cells exposed to microgravity for 24 (b) and 72 hours (d). RPM cell clumps, after reseeding into a normal gravitational field after 6 (e) and 24 hours (f). Magnification ×320 (a), (b), (c), (d), ×100 (e), (f).
