Figure 4From: Hyperglycaemia and oxidative stress upregulate HSP60 & HSP70 expression in HeLa cells ROS levels in the presence of glucose, H 2 O 2 , and sodium azide over 24 hours, 3, and 7 days. Each sample contained significantly elevated ROS activity after 24 hours, which continued to rise over 3 and 7 days. A dramatic increase in ROS activity is observed between days 3 and 7. (* represents statistically significant values, p < 0.05).Back to article page