Figure 2

Phenotype of the PCK-CCL. PCK-CCL was stained positively for the epithelial cell markers CK-19 and CK-7 as shown by immunofluorescence confocal microscopy (a and b). Light microscopy demonstrates positive expression of another epithelial cell marker, GGT (c). The majority of the PCK-CCL was negative for mesenchymal cell marker, vimentin (d, immunofluorescence confocal microscopy). Nuclei were stained with DAPI (blue). Magnifications: × 63 (a, b and d), × 20 (c).