International Journal of Molecular Sciences Article A Systems Biological View of Life-and-Death Decision with Respect to Endoplasmic Reticulum Stress—The Role of PERK Pathway Margita Márton 1, Anita Kurucz 1, Beáta Lizák 1, Éva Margittai 2, Gábor Bánhegyi 1 and Orsolya Kapuy 1,* 1 ...