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Pituitary adenomas represent an inhomogenous tumor entity in terms of growth rate, invasiveness and recurrence. To improve understanding of their different biological behaviour, tumor cell proliferation markers are applied. The aim of this study was to assess proliferation rates overall and in clinico-pathological subgroups using MIB-1 and the recently introduced cell proliferation marker anti-topoisomerase-II...
Summary. Ki-67 antigen is used as a marker of proliferative activity that is linked to growth rate, invasiveness and prognosis of pituitary adenomas. So far the distribution of Ki-67 index within an individual adenoma has not been investigated. If Ki-67 antigen expression differs significantly within an individual pituitary adenoma, a sampling error may result when assessing small fragments of adenoma...
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