Fig. 3 Visualization of depthcontrolled microinjections of trypan blue solution by HMN into rat skin at 10 μL and 20 μL/min (a), visualized by light microscopy at 4× magnification; bars represent 500 μm. Visualization of crosssections of cryofixed rat skin after depth-controlled microinjections of trypan blue solution into rat skin at 0.5 μL at 10 μL/min were performed (b), visualized either before or after H&E staining by bright-field microscopy at 10× magnification; bars represent 200 μm.
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