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UND 363 Dieterle

purpose for Deiterle method demo spirochetes or causitive organisms of legionella
principle argyrophil method (ability to bind or be impregnated with silver ions but require reducing agent) - spirochetes can bind silver but need hydroquinone to reduce to visible
fix NBF
micron 4-5
QC tissue with spirochetes or Legionella, chemically clean glassware, non metallic forceps
reagents in order for Deiterle method alcholic uranyl nitrate - sensitizer, alcoholic gum mastic - pretreatment, Silver nitrate - impregnation, Developer (hydroquinone/soduim sulfite/acetone/formaldehyde/pyridine/alcoholic gum mastic, Formic Acid
what is the purpose of the formic acid in this stain it is unknown
what caution must be use with the 1st step alsoholic uranyl nitrate temp cannot exceed 60○C or the silver will not precipitate
results for Deiterle method spirochetes/bacteria - brown or black, background - pale yellow or tan, other structures (melanin, chromatin, formalin pigment, pigmented macrphages) - brown to black
Created by: mustangvxd



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