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Different size of CTCs isolated by the NE-iFISH system. DAPI: blue; CD45: red; CEP8: red. (A) The size of WBC-like CTCs (orange arrow) is similar to that of the WBCs (red arrow) stained with CD45; (B) The size of tiny CTCs (orange arrow) is much smaller than that of WBCs (red arrow) stained with weak CD45; (C) The size of large CTCs is greater than 15 µm. Scale bar = 5 µm.
