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Morphology and characterization of human amniotic mesenchymal stem cells (hAMSCs). (A) morphology of passage 1−passage 3 hAMSCs. (B) Expression of hAMSCs surface markers. hAMSCs were positive for CD90, CD105, CD73, CD44 and negative for CD45, CD34, CD19, CD11b and HLA-DR. (C) Expression of vimentin of hAMSCs by immunohistochemistry.
