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Table 2 Embryo transfer results. A total of five embryo transfers were performed in this study. Transferring CRISPR/Cas9 injected IVF embryos was to generate IL2RG knockout fetuses. IL2RG knockout piglets were produced by transferring SCNT embryos

From: Biallelic modification of IL2RG leads to severe combined immunodeficiency in pigs

Surrogate ID

Number of embryos generated

Number of embryos transferred into a recipient

Source of embryos

pregnancy

Number of Fetus/piglets

73-10

128

124

IVF

No

–

Y463

117

93

IVF

Yes

6

104–154

262

262

SCNT

Yes

3

28–35

283

283

SCNT

No

–

27–78

352

352

SCNT

No

–