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Experimental SOS images of the Alexa Fluor 488 phalloidin labeled F-actin in the fixed cells (ECFCs) sample. The confocal (1PEF) (a) diffraction-limited and (b) two-step SOS images. (c) Intensity profiles along the yellow lines in (a) and (b). The multiphoton (2PEF) (d) diffraction-limited and (e) two-step SOS images. (f) Intensity profiles along the yellow lines in (d) and (e). Scale bar: 2 μm.
