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β-Galactosidase expression in E15 embryos. E15 embryos were collected from females transferred with eggs injected with pSG-MAR-2824 (A), pSG-MAR-5777 (B), or pSG-MAR-12166 transgenes (C). Embryos were stained with X-gal and screened for β-galactosidase expression sites. Renal localization was observed with pSG-MAR-5777 and pSG-MAR-12166 transgenes.
