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12th Congress of the European Hematology ... - Haematologica

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y using <strong>the</strong> Miltenyi CD34 isolation kit. MC were isolated from peripheral<br />

blood <strong>of</strong> 15 healthy subjects, 4 PV, 6 ET and 20 CML patients by<br />

Ficoll-Hypaque density gradient protocol. Total RNA was extracted from<br />

MC and CD34 + cells using Trizol method, cDNA was syn<strong>the</strong>sized by<br />

using High capacity? Kit (Applied Byosystems, EUA) and results were<br />

given as relative expression (amplicon ratio: c-flip gene / β-actin housekeeping<br />

gene). Lymphocyte resistance to apoptotic inducers (etoposide,<br />

cytarabine and cycloheximide) was also evaluated through cell death<br />

quantification measured by flow cytometry (annexin and hypotonicfluorescent-solution<br />

assays). Results. c-flip mRNA levels in CD34 + cells<br />

were increased only in CML patients (expression median, 45.1) in comparison<br />

to PV (3.23), ET (1.02) patients and controls (1.43) (p

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