Figure 4

A72 cell images representative of one region for each cell plate. Images of A72 cells stained with Giemsa stain solution: nucleus is brown red and cytoplasm is light red. The control cells and cells with three different K:D-Rib concentrations (0.05 mM, 0.5 mM and 5 mM) were tested at three different time points (24 h, 48 h and 72 h). A72 cells (4 × 10⁴ cells/ml) were sown and cultured at standard conditions (5% CO₂, 37°C and humidified atmosphere).