Figure 1. Morphology of monkey ESCs grown under the MT-fCFA culture condition.

A, B. CMK6_SFF (A) and CMK970 (B) cells maintained in the single-cell and feeder-free culture system with the MT-fCFA medium grow as a uniform monolayer with a high proliferation rate. Each cell shows an undifferentiated morphology with a high nucleus-to-cytoplasm ratio. C. CMK6 cells maintained under the conventional culture condition with MEF feeders. Scale bar = 100 µm.