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Transition patterns of the donor centrosome in bovine SCNT embryos. The number of γ-tubulin foci (□ one, ░ two, ▨ more than three, and ▪ none) in bovine SCNT embryos was examined by laser scanning confocal microscopy 15 min and 3 h after fusion. The total numbers of embryos in the control at 15 min, control at 3 h, and the caffeine and roscovitine groups, respectively, were 46, 35, 39 and 39.
