Fig. 7
From: Activatable fluorescent probes for imaging and diagnosis of rheumatoid arthritis
Structure of pH or Cys-related probes and their applications. a Fluorescence imaging of pH-ER in a λ-carrageenan-induced RA model. Reproduced with permission from ref. [104]. Copyright (2021) Elsevier B.V. b Probe’s (PEG-PBA-TGMS, PPT) application in vivo. Reproduced with permission from ref. [105]. Copyright (2021) American Chemical Society. c Mechanism of In-CYS reacts with Cys. Cys cysteine, RA rheumatoid arthritis, λ-carr λ-carrageenan, i.v intravenous injection, IVIS in vivo imaging system, DiD a near-infrared fluorescent dye