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Expression of cytokeratin 18 (CK18), vimentin and human placental lactogen (hPL) in primary trophoblasts. Cell slides were fixed, permeabilized, and incubated with primary antibodies and Cy3-labelled secondary antibodies. CK18 were stained red by immunofluorescence staining. The nuclei were stained blue. (A) CK18, (B) vimentin, and (C) hPL expression. Representative images are shown. Scale bar, 20 µm.
