BACTERIOLOGY

BACTERIA

A. Spherical bacteria, cocci

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Diplococcus pneumoniae, causing croupous pneumonia, smear

Gaffkya tetragena, occuring as tetrads, smear

Hemolytic streptococci, blood poisoning, blood smear

Micrococcus roseus, smear from culture

Neisseria catarrhalis, smear from culture

Neisseria gonorrhoeae, causing gonorrhoea, smear

Neisseria meningitidis (intracellularis), causing epidemic meningitis, smear from culture

Sarcina lutea, chromogenic rods occuring in packets

Staphylococcus aureus, pus organism, smear from culture

Staphylococcus epidermidis, smear from culture

Streptococcus faecalis, smear from culture

Streptococcus lactis, milk souring organism, smear from culture showing short chains

Streptococcus pyogenes, smear from culture showing short chains

Streptococcus pyogenes, smear from pus showing long chains

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B. Rod-shaped bacteria, non spore-forming, gram-positive

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Corynebacterium diphtheriae, smear from culture

Corynebacterium diphtheriae, stained to show the polar bodies

Lactobacillus bulgaricus (Thermobacterium), Yoghurt bacteria (Bulgarian soured milk), from culture

Lactobacillus casei, cheese and other milk products

Mycobacterium leprae, causing leprosy, smear or tissue section

Mycobacterium tuberculosis, smear from culture

Mycobacterium tuberculosis, smear from positive sputum stained after Ziehl-Neelsen

Mycobacterium tuberculosis, section of infected tissue, bacteria stained

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C. Rod-shaped bacteria, non spore-forming, gram-negative

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Acetobacter aceti, manufacture of vinegar, smear

Aerobacter aerogenes, smear from culture

Azotobacter, rods from soil, smear

Bacterium erysipelatos (Erysipelothrix rhusiopathiae), smear

Bacterium prodigiosum (Serratia marcescens), formation of red pigment, smear

Brucella abortus, causing abortation in cattle (Bang disease), smear

Eberthella typhi, causing typhoid fever, smear

Erwinia amylovora, occuring in short chains, causing pear blight, smear

Erwinia caratovora, causing soft root in vegetables, smear

Erwinia caratovora, section showing bacterial infection of tissue

Escherichia coli, colon bacteria, smear

Hemophilus influenzae (Pfeiffer), smear

Klebsiella pneumoniae (Friedlander), causing pneumonia smear

Pasteurella (Yersinia) pestis, bubonic plague, smear

Pasteurella pseudotuberculosis, smear from culture

Proteus vulgaris, putrefaction, smear from culture

Pseudomonas aeruginosa, smear from culture

Pseudomonas solonacearum, causes tobacco bacterial wilt, smear

Pseudomonas solonacearum, t.s. stem with bacteria in tissue

Rhizobium radicicola, smear from culture

Rhizobium radicicola, nitrogen fixing organisms, section through root nodule of lupin showing bacteria in situ

Salmonella enteritidis, causes meat poisoning, smear

Salmonella paratyphi, paratyphoid fever, smear

Salmonella pullorum, chicken disease, smear

Shigella dysenteriae, causes bacillary dysentery, smear

Shigella sonnei, smear from culture

Xanthomonas phaseoli, causing bacterial bean blight, sec. through the infected tissue

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D. Rod-shaped bacteria, spore-forming (bacilli)

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Bacillus anthracis, causes wool sorter’s disease, smear from infected spleen. Olt’s capsule stain

Bacillus anthracis, in section through infected tissue

Bacillus anthracis, smear from culture

Bacillus anthracis, spores stained

Bacillus cereus, bacteria from soil, smear from culture

Bacillus cereus, spores stained

Bacillus larvae, bee disease, smear

Bacillus megaterium, from soil, smear from culture

Bacillus mesentericus, smear from culture

Bacillus mycoides, large soil organisms growing in chains

Bacillus subtilis, hay bacillus, smear showing bacilli and spores doubly stained

Clostridium botulinum, causing food poisoning, smear

Clostridium perfringens, causing gas gangrene, smear

Clostridium perfringens, smear stained to show spores

Clostridium septicum, smear from culture

Clostridium tetani, causing lockjaw, smear

Clostridium tetani, special stained to show the terminal spores by the Ziehl-Neelsen method

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E. Spiral bacteria and spirochaetes

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Borrelia duttoni (Spirochaeta recurrentis), causes Central african relapsing fever, blood smear with organisms

Rhodospirillum rubrum, chromogenic rods, smear

Spirillum serpens, from putrid water, smear

Spirillum undula, in stagnant water, smear

Spirillum volutans, a very large spirillum, smear

Treponema pallidum (Spirochaeta pallida), section through syphilitic lesion stained by Levaditi’s silver method

Vibrio comma, causing Asiatic cholera, smear

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F. Mixed groups

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Actinomyces alni, sec. of root nodule showing mycorrhiza of alder

Actinomyces bovis, causing lumpy jaw, section through infected tissue

Actinomyces, causing lumpy jaw, smear

Caulobacter, stalk bacterium, smear

Galionella, iron bacteria, smear

Methanobacterium, forming methane, smear

Sphaerotilus natans, from putrid water, long chains with sheaths

Streptomyces griseus, streptomycin antibiotic, smear

Thiocystis or Lamprocystis, sulphur bacteria, smear

Tobacco mosaic, a virus disease, sec. of infected leaf

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G. Typical bacteria, composite slides

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Bacteria from bread, direct smear

Bacteria from cheese, smear or section

Bacteria from hay infusion causing decomposition, smear

Bacteria from human intestine, smear

Bacteria from mouth, Gram positive and negative bacteria can be observed in this slide, ideal for demonstration

Bacteria from sauerkraut, smear

Bacteria from sour milk, smear

Bacteria from yoghurt, smear

Mixed bacteria: slide showing mixed species from a number of different pure cultures

Typical bacilli in chains (streptobacilli), smear

Typical bacillus, rod-shaped, Gram negative, smear

Typical bacillus, rod-shaped, Gram-positive, smear

Typical bacteria: three smears on one slide, cocci, bacteria and spirilli are shown, carefully stained

Typical cocci in chains (streptococci), smear

Typical cocci in clumps (staphylococci), smear

Typical coccus, round-shaped, Gram-negative, smear

Typical coccus, round-shaped, Gram-positive, smear

Typical spirilli, spiral- or comma-shaped, smear

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H. Cytological slides, special staining techniques

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Capsule stain (Klebsiella pneumoniae), smear specially stained

Cell division (Bacillus cereus), Feulgen stain

Lophotrichous flagella on Spirillum, specially stained

Metachromatic granules or polar bodies (Corynebacterium diphtheriae), smear specially stained

Monotrichous flagella on Vibrio or Pseudomonas, spec. stained

Nuclear stain (Bacillus cereus), smear specially stained for nuclear material (DNA)

Peritrichous flagella on Salmonella or Proteus, spec. stained

Spore stain (Bacillus subtilis), smear doubly stained with central spores

Spore stain (Clostridium botulinum), smear doubly stained with subterminal spores

Typical mixed bacteria , including Gram-positive and Gram-negative rods, smear

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