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Hartmannella vermiformis as it entraps a Legionella pneumophila bacterium

This electron micrograph depicts an amoeba, Hartmannella vermiformis (orange) as it entraps a Legionella pneumophila bacterium (green) with an extended pseudopod.

After it is ingested, the Legionella pneumophila bacterium can survive as a symbiont within what then becomes its protozoan host. ... Read More

H and E Stained lung sections of patient from whom the Legionella pneumophilia was isolated, showing inter-alveolar exudation of macrophages and poly-morphic leukocytes. Legionella pneumophilia is not stained

H and E Stained lung sections of patient from whom the Legionella pneumophilia was isolated, showing inter-alveolar exudation of macrophages and poly-morphic leukocytes. Legionella pneumophilia is not stained Read More

Bacillus anthracis tenacity positive on sheep blood agar

B. anthracis Colony Characteristics: A. Consistency sticky (tenacious). When teased with loop, colony will stand up like beaten egg white.

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Gram-stained preparation of Bacillus subtilis

Gram-stained preparation of Bacillus subtilis showing rods, and spores (empty areas). (approx. 1000 X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Cyanobacteria Phormidium

Cyanobacteria (Phormidium) with the vital stain Sytox Green. Yellow/green cells are dead. Red is chlorophyll a fluorescence in live cells.

Photo Credit: Barry H. Rosen, USGS

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The Leopard and the Mouse: A Microbiologist's Take

The Small Things Considered blog has a post by Fred Neidhardt, F.G. Novy Distinguished University Professor, Emeritus, Department of Microbiology and Immunology, University of Michigan Medical School at Ann Arbor, that looks at two photos snapped by 19-year-old Casey Gutteridge at the Santago Ra... Read More

Crystal violet stained cocci

Crystal violet stained cocci. Tetrads, and diplococcal and staphylococcal arrangements are present. (approx. 1000 X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

photograph of hematoma-like swelling of the caruncle of turkeys infected with Erysipelothrix rhusiopathiae

photograph of hematoma-like swelling of the caruncle of turkeys infected with Erysipelothrix rhusiopathiae Read More

Monascus sp.

Monascus sp. Cleistothecium with asci. Nomarski. (800X) Read More

b323-7 clostridium perfringens gram stain from young culture

b323-7 clostridium perfringens gram stain from young culture Read More

Wheat infected with ergot fungus

Confocal micrograph of wheat stigma hairs (blue) infected with ergot fungus (light pink). The stigma is the female part of the plant. The plant is fertilised by the (male) pollen grain, which sticks to a stigma hair causing growth of a pollen tube into the plant's ovary, causing an embryonic whe... Read More

Viruses represented as lace doilies

Artist Laura Splan has created lace doilies, aka ornamental mats, of the herpes and SARS viruses.

Excerpt from Artists's Bio: My work explores perceptions of beauty and horror, comfort and discomfort. I use anatomical and medical imagery as a point of departure to explore these dualities an... Read More

Dick Despommier at TEDxMidAtlantic

Dick Despommier, co-host of This Week in Virology and host of This Week in Parasitism speaking about vertical farming at TEDxMidAtlantic 2010 in Washington, D.C. Read More

it this synergism?

Pseudomonas aeruginosa. Imepinem did that wird zone next to ampicilin sulbactam. Wat phenomen are that? Its that synergism? And it wil have activity in vivo? Thnx


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Mr. Ed's bane/zoonotic villains #4

The mosquito - God's cruelest instrument to ensure his creations stay in check?
The mosquito - proof that Evolution is a malevolent mistress that sups on human & animal misery alike?
The mosquito - spreader of VEE: Venezuelan equine encephalitis, which afflicts not only horses, donkeys, zebras... Read More

b323-4 clostridium perfringens biochemical reactions 15x

b323-4 clostridium perfringens biochemical reactions 15x Read More

Cryptococcus neoformans

Cryptococcus neoformans in solitary nodule. Gridley stain (400X) Read More

Proteus vulgaris

Electron micrograph of one cell of Proteus vulgaris with numerous flagella Read More

Haemophilus influenzae and Staphylococcus aureus

Haemophilus influenzae and Staphylococcus aureus. Satellite growth on blood agar Read More

Klebsiella pneumoniae

Large (about 5 mm in diameter), lactose positive colonies of Klebsiella pneumoniae on desoxycholate-citrate agar. Cultivation 37°C, 24 hours.

Klebsiella pneumoniae is a common source of hospital-acquired infections. Some of the strains can carry plasmids that harbour genes conferring resistan... Read More

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