ここでしょ。
>>Chimera production was performed with spleens of a transgenic mouse line harboring GFP under a CAG promoter (Okabe et al., 1997) which were also maintained homozygously in C57BL/6 background; this line is different from the one previously used (Obokata et al., 2014a; Obokata et al., 2014b).
