beta78Endoplasmic reticulum (ER) stress causes beta cell loss and dysfunction in T1D and T2D. Glucose regulated protein 78 (Grp78) is an abundant, widely expressed ER chaperoneImage Part No. Description Price Stock Status; BT-000780024 . Beta Tools 7824 Ring Slogging Wrench, 24mm: $50.77: Not In Stock notify me when available: BT-000780027