title: 5. Effects on staining of the presence of various kinds of dye impurities.
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure; D002855:Chromatography, Thin Layer; D004396:Coloring Agents; D003593:Cytoplasm / Q000648:ultrastructure; D004340:Drug Contamination; D004386:Duodenum / Q000166:cytology / Q000648:ultrastructure; D004847:Epithelial Cells; D004848:Epithelium / Q000648:ultrastructure; D006651:Histocytochemistry; D010950:Plasma Cells / Q000648:ultrastructure; D013194:Staining and Labeling
chemical_list: D004396:Coloring Agents