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Inter-species nuclear transfer could be used to preserve North Goat (Capra ibex), an endan-gered species. We established the culture conditions for ibex-hirus reconstructed embryos and optimized themethod for DNA extractions of a single cell and early cloned embryo. By using mitochondria-specific probesof ibex and hirus respectively we found that mitochondria of donor cells can co-exist with recipients in 1-celland 2-cell stages of the reconstructed embryos but not in the following developmental stages.