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Cytological findings for all lineages. K14D (A) cells were larger than ESCC‐DR (B) or ESCC‐DRtca2M cells (C). K14D and ESCC‐DR cells were characterized by sheet‐like proliferation; ESCC‐DRtca2M cells exhibited cytoplasmic projections and few intercellular junctions, which increased their migratory potential. Scale line = 200 μm
