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. Author manuscript; available in PMC: 2021 Mar 25.
Published in final edited form as: Biosens Bioelectron. 2019 Dec 28;151:112000. doi: 10.1016/j.bios.2019.112000

Fig. 4.

Fig. 4.

(a) Representative in vivo NIR-II fluorescence images of a BALB/c nude mouse with intestinal obstruction. Compared with GI tract images, DCNP@PDA NPs still accumulated at the obstructive sites even at 50 min post-gavage. (b) In vivo NIR-II FI-guided intestinal obstruction mapping on BALB/c nude mice. (c) In vivo NIR-II FI of GI tract after intestinal obstruction surgery. DCNP@PDA NPs passed through the obstructive site and discharged successfully after 24 h post-gavage. Scale bars are 10 mm.