Figure 1 of Schmack, Mol Vis 2009; 15:146-161.

Figure 1. Cell culture experiments of retinal pigment epithelium cells. Retinal pigment epithelium (RPE) cells of C57BL/6 mice were seeded on tissue culture flasks containing RPE cell culture medium and cultured for up to 7 days till they were grown to confluence. The micrographs demonstrate C57BL/6 RPE cells after 3 (A) and 7 (B) days of cell culture.