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Predominant expression of CBR1 in amnion fibroblasts. A and B, Immunohistochemical staining of CBR1 in human fetal membranes. AE indicates amnion epithelium; AF, amnion fibroblasts; and Ch, chorion trophoblasts. C and D, Immunocytochemical staining of CBR1 in cultured human amnion fibroblasts.
