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P. Dans-chaque-série-de, Les ADN amplifiés sont migrés sur un gel d'agarose à 2% contenant 0,05 ?g/mL de bromure d'éthidium. Le gel est alors scanné. Les bandes ont été quantifiées par densitométrie et analysées avec le logiciel « Image J » developpé par « National Institutes of Health ». L'enrichissement en ADN immunoprécipité (IP) est déterminé en divisant la densité des produits de PCR IP par celle des inputs (INP), pour les échantillons contrôles et traités puis en comparant le rapport entre les valeurs obtenues. La PCR est réalisée selon le protocole suivant : une incubation à 94°C pendant 3 min, pp.585-586