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. 2004 Jan 20;90(2):414–418. doi: 10.1038/sj.bjc.6601540

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Copyright © 2004 Cancer Research UK

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Immunostaining of PLK1 and Ki-67 in thyroid tissues. (A) PLK1 was not expressed in normal follicules. (B) Absence of PLK1 expression in follicular carcinoma. (C) PLK1 overexpression in papillary carcinoma. (D) Absence of Ki-67 antigen expression in a serial section with (C). (E) PLK1 was not overexpressed in anaplastic carcinoma. (F) Ki-67 antigen expression is frequently observed in a serial section with (E) Scale bar 150 μm.