Erence in visualizing punctate versus diffuse structures, the intensity settings were not the same for cells treated with DMSO versus 1 M GCA. Using the same settings, GM130 could not be visualized in the 1 M GCA-treated cells without saturating the GM130 in the DMSO-treated cells. Results shown are representative of two experiments in which cells were incubated in the presence of drugs for 16 h a