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SEM images of the MCF-7 cancer cells on the silica scaffold. (a) An overall image of the cell-scaffold construct; (b) the cancer cells grow in the form of multicellular spheroids on the scaffold; (c) the cells exhibit spherical morphology on the scaffold; (d) the multicellular spheroids have been intervened by (rather than simply sitting onto) the silica fibers; (e) a single cancer cell that is anchored firmly to several fibers around it.
