Staining Filamentous Bacteria Filaments Identifiable by Staining

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Staining Filamentous Bacteria Filaments Identifiable by Staining Gram Positive Neisser Positive Microthrix parvicella Microthrix parvicella (granules) Nocardia Nocardia (granules) Nostocoida limicola Nostocoida limicola Type 0041/0675 Type 0092 Type 1851 Type 0914 Tools for Staining • Microscope – Bright field (not phase contrast!) – Preferably 1000x oil immersion objective – Minimum of 200x objective Tools for Staining • Microscope Slides • Clothes pin • Wash bottle • Watch with a second hand • Paper towel • Bon Ami Scouring Powder (optional) Tools for Staining • Gram Stain Kit – Gram Crystal Violet Solution – Gram Iodine Solution – Gram Decolorizing Solution – Gram Safranin Solution Gram Staining Procedure 1. Gram Crystal Violet Solution • Flood slide for 1 minute • Rinse with DI water 2. Gram Iodine Solution • Flood slide for 1 minute • Rinse with DI water 3. Gram Decolorizing Solution • Hold slide at 45 degrees and apply dropwise until blue color stops rinsing off • Blast with DI water to stop reaction, blot dry with paper towel 4. Gram Safranin Solution • Flood slide for 1 minute • Rinse with DI water 5. View Slide at 1000x under bright light (not phase contrast) Tools for Staining • Neisser Stain Kit – Neisser Methyl Blue Solution A – Neisser Crystal Violet Solution B – Neisser Bismark Brown Solution – Transfer pipet – Container for mixing Solutions A and B Neisser Staining Procedure 1. Methyl Blue / Crystal Violet Solution • Mix 2 parts Methly Blue and 1 part Crystal Violet in a small container • Flood slide for 30 seconds • Rinse with DI water 2. Bismark Brown Solution • Flood slide for 1 minute • Rinse with DI water and blot dry (do not rub the slide) 3. View Slide at 1000x bright light (not phase contrast) .

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(12) United States Patent (10) Patent No.: US 6,905,539 B2 Patel Et Al
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