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. 2008 Jun 10;98(12):1993–1998. doi: 10.1038/sj.bjc.6604400

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Copyright © 2008 Cancer Research UK

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(A) Intense membranous immunostaining of carcinoma cells; no stromal immunostaining (E+/S−). (B) Immunostaining of both carcinoma cells and stroma (E+S+). (C) Stromal immunostaining and no epithelial immunostaining (E−S+).