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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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Micrasterias denticulata

Micrasterias is a Desmid - a group of green algae mostly found in neutral to acidic fresh waters and sphagnum bogs. Most are unicellular, though a few form chain-like colonies. Each cell is constructed of 2 semicells which are mirror images of each other. In Micrasterias the cells are flattened ... 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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Microbe vs. Mineral: A Life and Death Struggle in the Desert

The bursts of rainbow colors in this photograph are mesmerizing, yet microbes are fighting for their lives in the background. Michael P. Zach of the University of Wisconsin-Stevens Point, snapped this image of a salt sample he collected in a hot, arid valley near Death Valley National Park in Ca... Read More

Why we should wash our hands regularly #2

Because it isn't just for Establishment squares anymore!
As WellBee - debuted in 1964 - so aptly illustrates, (in a slightly dated style, considering the presence of readily available finger-nail toothpicks) simple hand washing is the most important tool available to prevent the spread of a who... Read More

Mundo de los Microbios - Podcasting in Puerto Rico

Gary Toranzos, host of MicrobeWorld's Mundo de los Microbios, and all his gear recording a podcast at the University of Puerto Rico. Read More

Proteus vulgaris

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

Oral bacterial colonies, including Capnocytophaga and Aggregatibacter

This color-enhanced photomicrograph shows different species of bacteria that cause dental plaque - a colorless film that forms on teeth caused by the growth of bacterial colonies. Plaque develops naturally, and in most cases can be easily removed with regular brushing. However, if left it can ha... Read More

Haemophilus influenzae and Staphylococcus aureus

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

Monascus sp.

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

Raw Sewage

Raw Sewage. Cellulose fibers. Note; limited cellulolytic activity Read More

Histoplasma capsulatum in blood smear

Histoplasma capsulatum in blood smear from human patient. Yeasts in macrophages. Each cell has clear area surrounding yeast cell Read More

Hymenomonas sp.

Phase contrast flash of Hymenomonas sp., a coccolithophorid phytoflagellate Read More

Cytomegalovirus in human foreskin tissue cells(40X)

Cytomegalovirus in human foreskin tissue cells (40X) Acridine orange stain. Dark, olive green bodies in refractile cells are intranuclear inclusions. Also show paranuclear bodies which are stained darker Read More

Conjuctival petechiae in meningococcemia

Conjuctival petechiae in meningococcemia Read More

Got one nasty sucker here folks . . .

Seen here via immunohistochemical staining of a gastric biopsy is the Heliobacter Pylori bacteria, or H. Pylori if you're in a hurry.
Able to survive the intensely acidic environment that is the human stomach, H. Pylori actually gets downright comfortable there. The bacterium has flagella and... Read More

Treponema pallidum

Dark-field preparation of Treponema pallidum. (approx X1000). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Mucor sp. fungal organism

Under a magnification of 200x, and using a lactophenol cotton blue mount fixation technique, this photomicrograph reveals some of the ultrastructural morphology exhibited by a Mucor sp. fungal organism. This image depicts two sporangia, a mature structure, which had ruptured, releasing its conte... 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

b323-7 clostridium perfringens gram stain from young culture

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

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