Review Article
Cloning and Embryo Splitting in Mammalians: Brief History, Methods, and Achievements
| Embryo sample | Method | Results | Reference |
| 4-cell | Biopsy | In vitro developing into blastocysts | [59] | 4-cell | Biopsy | Harvesting human ESCs (hESCs) | [60] | 2- to 5- & 6- to 8-cell | Biopsy | First twined human embryos | [28] | Morula | Bisection | Harvesting hESCs | [61] | 4-cell | Biopsy | Harvesting hESCs | [62] | Blastocyst | Bisection | Harvesting hESCs | [63] | 4-cell | Biopsy | First pregnancy by embryo splitting | [64] | 4-cell | Biopsy | Harvesting first Swiss hESC (CH-ES1) | [65] | 4-cell | Biopsy | Harvesting hESCs | [66] |
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