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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