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Table 1 Numbers of pups delivered by surrogate mother mice that received microinjected eggs with traditional and new transfer methods

From: Efficient method for transfer of microinjected eggs to mouse ampulla for generating transgenic mice

Traditional method New method
Pups born Numbers of eggs transferred % of pups born Pups born Numbers of eggs transferred % of pups born
2 7 28.5% 6 8 75%
1 10 10 9 13 70
1 8 12.5 9 14 64
5 9 55 5 7 71.4
Total 9 34 26.5% 29 42 69.0%
  1. Wilcoxon-Mann–Whitney-test analysis was performed. The z = − 2.309 and p = 0.0209 indicate that the difference between the numbers of pups born in the traditional and the new transferal method is significant