“Treatment of McA‐RH7777 cells with 4‐phenyl butyric acid , a chemical ER stress inhibitor, prevented glucosamine‐ and tunicamycin‐induced increases in GRP78 and phosphorylated eIF2α, rescued newly synthesized [35S]‐labeled apoB100, and substantially blocked the colocalization of apoB with GFP‐LC3.”