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Karyotype
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This human cell line contained large numbers of tetra-, hexa-, and higher-ploid cells (2s populations). The modal (s) cell population which occurred in 32% of cells had the pseudodiploid karyotype, 46,XX,-3,-18,del(7) (q21.12;q22.3), ?t(3q?18q). The rate of 2s cells was 42%. Two marker chromosomes, del(7) (q21.12;q22.3) and ?t(3q?18q), were present in all s metaphases, but ?t(3q?18q) was absent in 2s cells. DMs were found in some s cells whereas they were seen in the majority of 2s cells. HSR chromosomes were not found. In s metaphases, both N3 and N18 had only single copy, and the X chromosome was paired.
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Derivation
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The CCF-STTG1 cell line was established from a specimen of Grade IV astrocytoma from a 68-year-old Caucasian female by mincing and culturing in RPMI 1640 with 10% FBS.
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Clinical Data
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68 years Caucasian female The CCF-STTG1 cell line was established from a specimen of Grade IV astrocytoma from a 68-year-old Caucasian female by mincing and culturing in RPMI 1640 with 10% FBS.
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Antigen Expression
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HLA-DR; Homo sapiens, expressed
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Genes Expressed
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HLA-DR; Homo sapiens, expressed
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Comments
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The cells exhibit strong perinuclear acid phosphatase activity and glial fibrillary acidic protein is present in 70% to 80% of the cells. HLA DR is expressed on 20% to 30% of the cells after 48 hours in culture.
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