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. 2016 Jun 24;11(6):e0157185. doi: 10.1371/journal.pone.0157185

Fig 1. Immunostaining for TLR4 in normal term placentae.

Fig 1

(A) The expression of CK7 in the maternal surfaces of placentae; (B) The expression of vimentin in the maternal surfaces of placentae; (C) The expression of TLR4 in the maternal surfaces of placentae. In the serial sections of maternal surfaces of normal placentae, TLR4 expressions were observed in trophoblast, decidual cells and in the vascular endothelial cells (n = 36). (D) In the fetal sections of placentae, the straining of CK7 were observed; (E) The expression of vimentin in fetal section of normal placentae (n = 36); (F) The expression of TLR4 in the fetal surface of placentae. Except in trophoblasts and vascular endothelial cells, TLR4 staining were also observed in amniotic epithelium (n = 36). STB, syncytiotrophoblast; BV: blood vascul; DC, decidual cells; AE, amniotic epithelium. CK7: cytokeratin 7; TLR4: toll like receptor 4. Positive staining is brown. Magnification ×100.