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UNIVERSITE DE LIMOGES Ecole doctora
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de m’avoir donnée le goût pour
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KO : « knock-out » : délétion d
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Figure 27 : Les trois types de N-gl
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5.2.2. Les galectines, les voies No
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Afin d’assurer la défense de l
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conduire les cellules B au long de
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Les immunoglobulines sont des hét
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antigènes et dans la transduction
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1.2.2 Le Locus Igλ Les gènes de c
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empêcher des recombinaisons illég
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de l’ADN est réalisée par les p
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Figure 8 : Les nucléotides N et P.
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séquences Ig (Goodhardt et al., 19
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B, le nombre de cellules exprimant
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Des promoteurs ont également été
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maturation : aux stades précoces,
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jusqu’à Cδ, ne supprime pas pou
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3.1 La phase indépendante des anti
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Novobrantseva et al., 1999) et que
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Figure 14 : Bilan des blocages part
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Dendritic Cells »). Elles devienne
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sécrétrices est controversée. De
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et al., 2000; Chumley et al., 2000;
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La commutation isotypique, permetta
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L’action des cytokines semble s
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l’hypermutation (Muramatsu et al.
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IV. L’activation des lymphocytes
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La translocation du BCR après pont
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protéines. La protéine ZAP-70 ét
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comme NF-κB (Krappmann et al., 200
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démontré que CD22 était continue
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Figure 24 : Comparaison des région
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Au cours du développement B, le pr
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membranaire s’avère possible exp
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IgM/IgD (Brink et al., 1992; Spanop
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V. « Glycannes et glycoconjugués
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Groupe d'enzymes Sialyltransférase
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L’édification d’une structure
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5.1.2. La O-glycosylation des prot
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• la O-glucosylation qui a lieu s
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Les protéoglycannes peuvent varier
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o L’Héparane Sulfate (HS) et l
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C’est le premier hexosamine greff
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égion constante. L’analyse des d
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pathologies pour lesquelles l’ars
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intégrines VLA-4, VLA-5 et α4β7,
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thymocytes double négatifs CD4- CD
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délétion conditionnelle des gène
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Dans la MEC, les protéoglycannes f
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endothéliale, de façon à permett
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Résultats - Discussion 107
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Première partie : les BCR modifié
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Article 1 “Premature expression o
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Article 2 “B cells carying an IgE
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Demande de dépôt de brevet Etabli
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mécanismes relèvent les différen
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