title: [Introduction of the Hansel stain].
mesh_terms: D003581:Cytodiagnosis; D004804:Eosinophils; D006801:Humans; D008722:Methods; D009297:Nasal Mucosa / Q000378:metabolism; D006255:Rhinitis, Allergic, Seasonal / Q000175:diagnosis*; D013194:Staining and Labeling