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[90], 'successfully': [93], 'produce': [99], 'acid-chitosan': [101, 231], 'conjugate,': [102], 'which': [103], 'then': [105, 152], 'loaded': [106], '5-ALA': [108, 117, 243], 'create': [110], 'nanoparticles': [111], '(fCNA).': [112], 'The': [113, 134, 149, 182], 'loading': [114], 'efficiency': [115], 'fCNA': [119, 137, 150, 186], 'particles': [120], 'z-average': [123], 'diameter': [124], 'were': [125], 'range': [128], '35-40%': [129], '100': [131], 'nm,': [132], 'respectively.': [133], 'zeta-potential': [135], 'was': [138], '20': [139], 'mV,': [140], 'enough': [141], 'keep': [143], 'stable': [146], 'without': [147], 'aggregation.': [148], 'incubated': [153], 'HT29': [155, 194], 'Caco-2': [157, 196], 'cell': [160, 170, 197], 'lines': [161, 198], 'overexpressing': [162], 'on': [165], 'surface': [167], 'membrane': [171], 'determine': [173], 'rate': [175], 'accumulation': [177], 'protoporphyrin': [179], 'IX': [180], '(PpIX).': [181], 'results': [183], 'show': [184], 'that': [185], 'taken': [189], 'up': [190], 'more': [191], 'easily': [192], 'by': [193], 'period,': [202], 'most': [203], 'likely': [204], 'receptor-mediated': [206], 'endocytosis,': [207], 'PpIX': [210], 'accumulates': [211], 'function': [217], 'expression': [222], 'modification.': [227], 'Therefore,': [228], 'conjugate': [232], 'appears': [233], 'an': [236], 'ideal': [237], 'vector': [238], 'colorectal-specific': [240], 'delivery': [241], 'fluorescent': [245], 'endoscopic': [246], 'detection.': [247]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1964836370', 'counts_by_year': [{'year': 2024, 'cited_by_count': 12}, {'year': 2023, 'cited_by_count': 14}, {'year': 2022, 'cited_by_count': 20}, {'year': 2021, 'cited_by_count': 19}, {'year': 2020, 'cited_by_count': 19}, {'year': 2019, 'cited_by_count': 20}, {'year': 2018, 'cited_by_count': 18}, {'year': 2017, 'cited_by_count': 17}, {'year': 2016, 'cited_by_count': 31}, {'year': 2015, 'cited_by_count': 24}, {'year': 2014, 'cited_by_count': 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