Figure 3. mESCs express pluripotency markers. (A) C57BL/6 mESC culture in OriCell C57BL/6 × 129 medium. (B) The pluripotency marker NANOG (red), OCT4 (green), SSEA1 (red) and staining was visualized through fluorescent microscopy. Abbreviation: mESCs: mouse embryonic stem cells.