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. 2013 Mar 25;46(1):32–38. doi: 10.5115/acb.2013.46.1.32

Fig. 1.

Fig. 1

Immunohistochemical analysis of cytokeratin and connexin in the human fetal lung and abdominal organs: a fetus at 12 weeks. (A, D, G, J) Expression of cytokeratin-19 (CK19); (B, E, H, K) expression of cytokeratin-14 (CK14); (C, F, I, L) expression of connexin-43 (CX43). CK19 immunopositivity is seen in the lung (A), kidney (D), colon (G), and gallbladder (J), whereas these tissues lack CK14 immunoreactivity. The kidney and adrenal cortex (F) show positive results for CX43. Scale bar in (C)=0.5 mm (A-L).