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- W2133027863 abstract "✓ The authors compared detection methods for cell proliferation in human anterior pituitary adenomas using histological sections and dispersed cell culture. After tumor cells had been grown for 4 days in dispersed culture, bromodeoxyuridine (BUdR), proliferating cell nuclear antigen (PCNA), and Ki-67 were compared by double immunostaining and contrasted with single staining of PCNA and Ki-67 indices in the corresponding histological sections from 12 human pituitary adenomas. In vitro, the BUdR labeling index was positive in six of 12 tumors (range < 0.1–5.1%), 10 of 12 tumors were PCNA-positive (range < 0.1–100%), and Ki-67 was positive in 10 of 12 adenomas (range < 0.1–8%). In vitro, BUdR and Ki-67 gave similar proliferative indices for 10 of 12 adenomas. In vivo, the PCNA labeling index was positive in 12 of 12 adenomas (range 0.9–95%) and Ki-67 was positive in 11 of 12 adenomas (range < 0.1–2%). Tumors with a labeling index less than 0.1% were considered to be negative for proliferation. High PCNA values were found in vitro and in vivo, whereas Ki-67 labeling indices were similar in vitro and in vivo for nine of 12 adenomas. It is concluded that Ki-67 proliferative indices in vivo reflect those found in vitro, at least after 4 days in dispersed culture, but that PCNA overestimates pituitary adenoma proliferation in histological sections as well as in dispersed culture." @default.
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- W2133027863 date "1997-07-01" @default.
- W2133027863 modified "2023-10-14" @default.
- W2133027863 title "A comparison of proliferation indices in human anterior pituitary adenomas using formalin-fixed tissue and in vitro cell culture" @default.
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- W2133027863 doi "https://doi.org/10.3171/jns.1997.87.1.0085" @default.
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