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Chromosomal anomalies were assessed in nuclear transfer (NT) embryos ( n = 148) at 1-4-cell stage ( n = 88), and morula ( n = 60), as well as in donor cells ( n = 97) derived from two different cell lines. Two different cytogenetic approaches were used: conventional karyotyping and fluorescent in...
Genetic modification of somatic cell nuclei and subsequent nuclear transfer has opened an opportunity to create gene-targeted animals. However, somatic cells have a limited life span in culture and it is not possible to introduce precise genetic changes in both alleles in this narrow time window....
Since their isolation in 1998, human embryonic stem (hES) cells have been shown to be capable of adopting various cell fates in vitro . Here, we present in vitro data demonstrating the directed commitment of human embryonic stem cells to the osteogenic lineage. Human ES cells are shown to respond...
Early developmental kinetics of nuclear transfer (NT) embryos reconstituted with blastomeres and parthenogenones produced by ionophore activation followed by either dimethylaminopurine (DMAP) or cycloheximide (CHX) treatment was studied. In vitro produced (IVP) embryos served as controls. Embryos...