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Growth of the tumorspheres in the novel 3D culture system. (A) Morphological characteristics during the growth of tumorspheres for 7 days. (B) Formation of tumorspheres in the Sune1, H460 and SW480 cell lines. (C) The C666-1 cell line did not form tumorspheres in the traditional or 3D culture systems. 3D, three-dimensional.
