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Table 6 Influence of the number of cloning rounds on the cloning outcome

From: Factors influencing the efficiency of generating genetically engineered pigs by nuclear transfer: multi-factorial analysis of a large data set

No. of cloning rounds Chance for pregnancy Chance for delivery Cloning efficiency (%) No. of live cloned piglets No. of healthy cloned piglets
1 1.3 3.4 4.4 3.2 1.7
2 1.0 6.8 3.5* 2.2* 0.5*
3 3.2 1.7 2.9* 3.1 1.6
  1. One cloning round was used as the reference category. For details on the statistical analysis and definition of the cloning benchmarks listed, please see Methods.* Statistically significant differences (p < 0.05).