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Hepatitis B virions with Dane particles

This digitally-colorized transmission electron micrograph (TEM) revealed the presence of hepatitis B virions. The large round virions are known as Dane particles.

Hepatitis means inflammation of the liver. Toxins, certain drugs, some diseases, heavy alcohol use, and bacterial and viral infec... Read More

Smallpox vaccine - photos of immunization site

Click source to view photos of the development of a smallpox immunization lesion on a listener of This Week in Virology's arm. Read More

Photomicrograph of Algae - 1856 by John William Draper

A multitalented scientist and inventor, John William Draper worked as a chemistry professor at the University of New York, where he conducted research in numerous fields, ranging from medicine and philosophy to spectrum analysis and photography. This photograph displaying the physiological chara... Read More

Bacteriologist Dr. Ida A. Bengston (1881-1952)

At her microscope, this historic image of bacteriologist Dr. Ida A. Bengston (1881-1952), was taken from the U.S. Public Health Service records.
This photo is symbolic of the importance of laboratory equipment to the CDC’s progress in the improvement of world wide public health standards. Dr. B... Read More

How Escherichia coli Move

Escherichia coli use long, whip-like structures called flagella to propel themselves. Motors in the cell's wall spin the flagella into bundles that rotate counter-clockwise, creating a twist that causes the bacterium to rotate clockwise, or towards the right when viewed from above.

Insight in... Read More

Schistosomiasis poster

Photograph of a poster issued by the Chinese government in the late 1970s depicting the spread of schistosomes to humans from snails as a consequence of agricultural practices. These posters have been in the office of Dickson Despommier since the 1970s. Read More

Hookworm poster

Photograph of a poster issued by the Chinese government in the late 1970s depicting the spread of hookworm to humans by the use of human feces as fertilizer. A prevention method is also illustrated - wearing shoes. These posters have been in the office of Dickson Despommier since the 1970s. Read More

Two different proteins produced by anthrax bacteria, Protective Antigen, Lethal Factor

A computer model shows side and top views of two different proteins produced by anthrax bacteria. The green molecule is "protective antigen" (PA), which spontaneously forms pores that penetrate organic membranes such as cell walls. The yellow molecule is "lethal factor (LF)." When a voltage is a... Read More

Influenza Virion

On a lavender background, this illustration provides a 3D graphical representation of a generic influenza virion’s ultrastructure, and is not specific to a seasonal, avian or 2009 H1N1 virus.

There are three types of influenza viruses: A, B and C. Human influenza A and B viruses cause season... Read More

Atomic Force Microscope Image-E. Coli

This image of the common Eschericia coli--or E. coli--was taken using a special microscope called an Atomic Force Microscope (AFM). The AFM image was produced by tracking across the top of the bacteria with a very sharp tip. The tip is as sharp as a few atoms. The very small change in height (am... Read More

Drawing of broken red blood cells, as seen in the blood of people with hemolytic uremic syndrome.

In hemolytic uremic syndrome, toxins destroy red blood cells. These misshapen cells may clog the tiny blood vessels in the kidneys.

Credit: National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health.
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Vegetables discarded, mulched over E. coli fears in Europe

Click source to view some great images of crops being destroyed as the result of E. coli prevention steps in Europe. Read More

Hepatitis virions, of an unknown strain of the organism

: This transmission electron micrograph (TEM) revealed numerous hepatitis virions, of an unknown strain of the organism. In the United States, viral hepatitis is an important public health problem because it causes serious illness, it affects millions, and it has a close connection with HIV. The... Read More

Ecological Genomics of Reef Corals

Young sibling polyps of staghorn coral (Acropora millepora) three days after settlement. In a National Science Foundation-supported study, researchers found that the ability to fluoresce may influence whether or not the coral settle on the reef of their origin or disperse, and go elsewhere.

M... Read More

Tons of cucumbers discarded over E. coli fears

Click source to view images of workers throwing away cucumbers to be destroyed at an agriculture facility near Bucharest on Monday, June 6, as sales collapsed in Romania's markets due to the fear of E. coli contamination. Read More

Salmonella typhimurium invading cultured human cells.

Color-enhanced scanning electron micrograph showing Salmonella typhimurium (red) invading cultured human cells.

Salmonella is actually a group of bacteria that can cause diarrheal illness in humans. They are microscopic living creatures that pass from the feces of people or animals to other p... Read More

An alternate view of amoebae fruiting bodies, with spores and bacteria.

An alternate view of amoebae fruiting bodies, with spores and bacteria. Related Story: Like Humans, Amoebae Pack a Lunch Before They Travel.

Some amoebae do what many people do. Before they travel, they pack a lunch.

In results of a study reported today in the journal Nature, evolutionary ... Read More

Colonies of Bacteria Do Battle - Paenibacillus dendritiformis

Poisons are unleashed when colonies of bacteria get too close, creating a toxic no-man's land in between.

Research by Eshel Ben-Jacob of the University of California, San Diego's, Center for Theoretical Biological Physics, Ben-Jacob of Tel Aviv University, Avraham Be'er of the University of T... 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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Escherichia coli showing flagella

This is a colorized transmission electron micrograph of Escherichia coli O157:H7. Transmission electron micrograph of E. coli O157:H7 showing flagella. Pseudoreplica technique.

E. coli O157:H7 was first recognized as a cause of illness in 1982 during an outbreak of severe bloody diarrhea; the... Read More
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