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Infectious bronchitis virus (IBV) virions

This 1975 transmission electron micrograph (TEM) revealed the presence of a number of infectious bronchitis virus (IBV) virions, which are Coronaviridae family members, and members of the genus Coronavirus. IBV is a highly contagious pathogen, which infects poultry of all ages, affecting a numbe... Read More

Leukemia treatment - immune system T-cells (center) binding to beads which cause the cells to divide

This microscopy image provided by Dr. Carl June, shows immune system T-cells, center, binding to beads which cause the cells to divide. The beads, depicted in yellow, are later removed, leaving pure T-cells which are then ready for infusion to the cancer patients. Scientists are reporting the fi... Read More

HIV particles infecting a human T cell

Scanning electron micrograph of HIV particles infecting a human T cell. Credit: NIAID, NIH Read More

S. aureus bacteria escaping destruction by human white blood cells.

Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) infections are caused primarily by a single strain—USA300—of an evolving bacterium that has spread with “extraordinary transmissibility” throughout the United States during the past five years, according to a new study le... Read More

Euglena mutabilis

Living green alga Euglena mutabilis. Technique: Differential interference contrast. Credit: Gerd Gunther, Düsseldorf, Germany

Nikon Small World 2012 Honorable Mention. Read More

Corona - but not the kind a good guest brings to your summer picnic

Remember SARS? Or the last time you had a nasty cold? Lay your troubles at this bad-boy's door.
In fact, SARS-CoV - the Corona variant that causes SARS - has the rather unique quality of causing both upper & lower respiratory infections, and gastroenteritis.
Note as well that the Coronavi... Read More

An ounce of prevention . . .

As the old saying goes, can beat a pound of the Shigella bacteria, seen here penetrating the intestinal mucosa of some poor soul.
Killing approx. 1 million people annually - most of them children, Shigella is best prevented by two simple strategies: washing hands before handling food & thorou... Read More

Absidia corymbifera

Absidia corymbifera in a transplantable 'tumor' of the mouse Read More

Campylobacter bacteria

Campylobacter bacteria are the number-one cause of food-related gastrointestinal illness in the United States. To learn more about this pathogen, ARS scientists are sequencing multiple Campylobacter genomes. This scanning electron microscope image shows the characteristic spiral, or corkscrew, s... Read More

Conidia of Exophiala jeanselmei

Conidia of Exophiala jeanselmei. Sporulation is from 'shoulder' or distal end of a hyphal cell, or from the tip of a conidiophore. LCB stain. Read More

Corynebacterium - Tissue section

Corynebacterium - Tissue section. H & E stain. Diphtheritic tonsillitis Read More

Paramecium caudatum

Nikon Small World Honorable Mention 2010 photomicrography competition, Gerd A. Guenther, Düsseldorf, NRW, Germany

Subject Matter: Paramecium caudatum fed with Congo red-stained yeast, living specimen (600x)
Technique: Differential interference contrast Read More

A spore from the bacterium Bacillus subtilis

A spore from the bacterium Bacillus subtilis shows four outer layers that protect the cell from harsh environmental conditions.

Bacillus subtilis is a ubiquitous bacterium commonly recovered from water, soil, air, and decomposing plant residue. The bacterium produces an endospore that allows... Read More

From Microbes to Crude

Accompanying the previous NYT article 'Tracing Oil Reserves to their Tiny Origins" is this graphic which depicts the oil formation process. Read More

Fruticose lichen

A fruticose (leaflike) lichen. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Escherichia coli

Escherichia coli showing lactose fermentation EMB agar. Note green sheen on colony. Read More

Escheria coli in spinal fluid - gram stain

Escheria coli in spinal fluid - gram stain Read More

Influenza A (H1N1) aka Swine Flu Virus

Under a plate magnification of 37,800X, this colorized transmission electron micrograph (TEM) depicted the A/New Jersey/76 (Hsw1N1) virus, while in the virus’ first developmental passage through a chicken egg. Read More

Blastomyces dermatitidis

Blastomyces dermatitidis in pus from a dressing. Two characteristic budding cells are present. Note broad base building Read More

Colorful cells

Actin (purple), microtubules (yellow), and nuclei (green) are labeled in these cells by immunofluorescence. This image won first place in the Nikon 2003 Small World photo competition.

Torsten Wittmann, Scripps Research Institute Read More

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