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Fig. 7. Effects of NH₄Cl and monensin on the subcellular localization of MPR46 and its ligands in SCC-VII cells. SCC-VII cells were incubated in complete culture medium in the absence (control) or presence of either 1 µM monensin or 10 mM NH₄Cl for 10 hours at 37°C. The cells were then fixed, permeabilized and incubated with antibodies to cathepsin D and TGN38 (panel A), or antibodies to MPR46 and the lysosomal marker LAMP-1 (panel B). Bound primary antibodies were then detected with FITC- and Cy3-labeled secondary antibodies before analysis of the immunostained cells by confocal laser-scanning microscopy. Bars, 10 µm.

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