The final step in gram staining is to use a basic fuchsin stain to give decolorized gram-negative bacteria a pink color for easier identification. It is also known as counterstain. Some laboratories use safranin as a counterstain; however, basic fuchsin stains gram-negative organisms more intensel...
Arrangement of bacterial cells (single cells, paired cells, chains of cells, clusters, groupings) will be visible. 2. Capsule Staining Set-up Wear gloves and a lab coat as dyes stain hands and clothing. To prepare 1% Crystal Violet solution, mix 0.25 gram Crystal Violet with 25 mL distille...
Pseudomonas Luteola: Morphology, Oxidase Test & Gram Stain Alphaproteobacteria: Definition & Characteristics Pseudomonas Luteola: Habitat & Identification Pseudomonas Fluorescens Uses in Agriculture Pseudomonas Oryzihabitans: Identification & Characteristics Bacteria Activities & Games Clostridium Novyi: Symptoms &...
AerobicGram-PositiveBacilliPartIIDivisionofMedicalTechnologyCarolLarsonMSEd,MT(ASCP)•Gramstain–Morphology–Arrangement•Formationofspores•CatalasereactionDifferentiationofMajorGPRGenera•Spore-formingGPR,catalasepositive–Bacillusspecies–Bacillusanthracis–Bacilluscereus•Nonspore-formingGPR,catalasepositive–Liste...
Example GenusMicroscopic MorphologyUnique Characteristics BacillusLarge, gram-positive bacillusAerobes or facultative anaerobes; form endospores;B. anthraciscauses anthrax in cattle and humans,B. cereusmay cause food poisoning ClostridiumGram-positive bacillusStrict anaerobes; form endospores; all known species...
AerobicGram-PositiveBacilliPartIIDivisionofMedicalTechnologyCarolLarsonMSEd,MT(ASCP)•Gramstain–Morphology–Arrangement•Formationofspores•CatalasereactionDifferentiationofMajorGPRGenera•Spore-formingGPR,catalasepositive–Bacillusspecies–Bacillusanthracis–Bacilluscereus•Nonspore-formingGPR,catalasepositive–Liste...
Arrangement of bacterial cells (single cells, paired cells, chains of cells, clusters, groupings) will be visible. 2. Capsule Staining Set-up Wear gloves and a lab coat as dyes stain hands and clothing. To prepare 1% Crystal Violet solution, mix 0.25 gram Crystal Violet with 25 mL distil...