Fig. 1

Establishment of patient-derived PTC organoids harboring BRAF^V600E mutation or wild-type (WT). a Overview of the procedure. Nine PTC organoids were derived and analyzed by histological characterization, DNA-sequencing, and drug sensitivity assays. b Expansion potential of nine PTC organoid cultures. Dots on the graph represent passage, arrows represent continuous expansion. PTC, papillary thyroid cancer; O, organoid. c Representative images of long-term cultured PTC organoids. Organoid cultures were derived from PTC-4_O and PTC-8_O. Scale bar, 100 µm. d Organoid formation efficiency of BRAF^V600E PTC organoids and BRAF^WT PTC organoids. Data represent the mean ± SEM of organoid number in PTC organoid lines. Scale bar, 100 µm