Replicative Endothelial Cell Senescence May Lead to Endothelial Dysfunction by Increasing the BH2/BH4 Ratio Induced by Oxidative Stress, Reducing BH4 Availability, and Decreasing the Expression of eNOS - Hernandez-Navarro, I.; Botana, L.; Diez-Mata, J.; Tesoro, L.; Jimenez-Guirado, B.; Gonzalez-Cucharero, C.; Alcharani, N.; Zamorano, J.L.; Saura, M.; Zaragoza, C. (International Journal of Molecular Sciences, 2024)