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Immunofluorescence staining of CK19, Gal-1, Gal-3, and Ki-67 on PTC- and NTG-derived organoids and the matched tumor tissues. Nuclei were counterstained with DAPI (blue). Passage numbers of these organoid lines were: PTC-3_O, P3; PTC-10_O, P5; NTG-1_O, P4. CK19, Cytokeratin 19; Gal-1, Galectin-1; Gal-3, Galectin-3; NTG, nodular thyroid goiter; T, tumor; O, organoid. Scale bar, 100 µm.
