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(a) Structure and reaction of probe 28 with PhSH. (b,d,f) Thymidine phosphorylase (TP) images of probe 28 in Hela cells from the green channel without thiophenol, with thiophenol, and with both NEM (N-ethylmaleimide) and thiophenol, respectively. (c,e,g) are corresponding TP images of (b,d,f) from the red channel, respectively. Reproduced with permissions from [89]. Copyright American Chemical Society.
