Itraconazole-loaded chitosan-silver nanoparticles [153]necrosulfonamide-loaded mesoporous nanoparticles (inflammation) [154] Cisplatin-loaded Glutathione-responsive biodegradable polyurethane nanoparticles(cancer): UV–Vis spectrophotometer at 703 nm [155]Curcumin-loaded self-assembled WPI@SLG core–shell nanoparticles (antioxidant activity in gastrointestinal conditions): absorbance at the wavelength of 426 nm [156]Ciprofloxacin-loaded PEG–PLGA NPs (regenerative endodontic treatment): absorbance 275 nm [157]ATP-loaded albumin nanoparticles (cancer): UV/Vis spectrophotometer at 257 nm [158]. Here, ALB is linked to cancer.