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Proliferation kinetics of mussel (Mytilus galloprovincialis) gill cells
Authors:M J Martínez-Expósito  J J Pasantes  J Méndez
Institution:(1) Departamento Biología Celular y Molecular, Área de Genética, Universidad de La Coruã, E-15071 La Coruña, Spain
Abstract:A technique of sister chromatid differentiation (SCD) using bromodeoxyuridine (BrdU) incorporation and a modification of the fluorescence plus Giemsa (FPG) method was employed to determine cell-proliferation kinetics in gill tissue of the mussel Mytilus galloprovincialis. Dose-dependent proliferation inhibition was examined. In vivo administration of BrdU for 12, 24, 36, 48, 60, 72, 84, and 96 h was studied. Our data show that the highest yield of second-generation metaphase plates is obtained after 60 h BrdU treatment; the duration of a cell cycle is 24 to 30 h. On the basis of these data, a BrdU incorporation period of 48 to 60 h would seem to be most appropriate for the sister chromatid exchange (SCE) tests carried out in gill cells of M. galloprovincialis, whereas the 12 to 24 h exposure would give the best results for replication band analysis.
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