Humans 8 U937 Cells 8 controlled study 8 human 8 human cell 8 Article 6 metabolism 6 unclassified drug 6 virology 6 Cell Line, Tumor 4 Dengue Virus 4 Dengue virus 4 Endocytosis 4 U-937 cell line 4 U937 cell line 4 Vero cell line 4 Virus Internalization 4 ammonium chloride 4 animal cell 4 article 4 cell viability 4 clathrin 4 drug effect 4 dynamin 4 endocytosis 4 endosome 4 nonhuman 4 pH 4 pathology 4 physiology 4