Figure 6 of Zhang, Mol Vis 2012; 18:161-173.

Figure 6. Expression of keratin, growth factors, the ECM, and integrins was detected qualitatively with immunofluorescence stain. The positive signal for normal cultured cells was red; the nuclei are stained with DAPI (blue). For seeded cells, the positive signal was green, and nuclei are stained with PI (red).