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Table 2 Dectection and efficiency of CRISPR/Cas9-mediated homologous recombination at Ramp2 locus at blastocyst stage

From: A single blastocyst assay optimized for detecting CRISPR/Cas9 system-induced indel mutations in mice

Experiment no.

Site injected1

Cas9 mRNA: R2 gRNA: R2HR donor DNA (ng/μL)

No. zygotes injected

No. Blastocysts/no. zygotes cultures (%)

No. EGFP-expressing blastocysts/no. blastocysts tested (%)

1

pn

100:50:10

22

15/22 (68)

1/15 (7)

2

cyto

100:50:10

20

8/16 (50)

2/8 (25)

3

pn/cyto

200:50:10

25

7/20 (35)

4/7 (57)2

  1. 1Injection was performed toward pn: pronuclei; cyto: cytoplasm; pn/cyto: pronuclei and cytopalsm.
  2. 2Representative results from experiment 3 are shown in Figure 4B and C.