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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

This Week in Microbiology - Behind the Scenes with Stan Maloy at #AAAS

Stan Maloy of the American Society for Microbiology participates in the first episode of This Week in Microbiology live from the American Association for the Advancement of Science meeting in Washington, D.C.

This Week in Microbiology will officially launch next week. Other guests for the fir... Read More

b326-1 clostridium tetani - biochemical reactions (15x)

b326-1 clostridium tetani - biochemical reactions (15x) Read More

Hemorrhagic fever claims 3 lives in western India

An Ebola-like hemorrhagic fever has killed three people in western India and dozens of doctors will screen a community of about 16,000 people in efforts to contain the disease, a state health minister said this past Wednesday.

India's National Institute of Virology later confirmed that the th... Read More

Egg of Hymenolepis diminuta

Eggs of Hymenolepis diminuta. These eggs are round or slightly oval, size 70 - 85 µm X 60 - 80 µm, with a striated outer membrane and a thin inner membrane. The space between the membranes is smooth or faintly granular. The oncosphere has six hooks. There are no polar filaments extending into... Read More

Gram-positive Enterococcus sp. bacteria

This digitally-colorized scanning electron micrograph (SEM) depicted large numbers of Gram-positive Enterococcus sp. bacteria.
“Enterococci, leading causes of nosocomial bacteremia, surgical wound infection, and urinary tract infection, are becoming resistant to many and sometimes all standard ... Read More

Plasmodium ovale

Plasmodium ovale immature schizont (1000X) Read More

Flickr Group for Microbiology Lab Training

This is a great visual resource for learning and teaching microbiology lab techniques. You have to join Flickr.com and then sign up to access the groups contents. Read More

Aspergillus fumigatus

Aspergillus fumigatus. Typical dichotomous branching of hyphae in pulmonary lesion of a horse. PAS stain Read More

SIM Media

Sulfur-indole-motility test (SIM media) results for:
(A) Escherichia coli: Motile***, hydrogen sulfide (-), indole (+)*
(B) Staphylococcus aureus: Non-motile, hydrogen sulfide (-), indole (-)
(C) Salmonella arizonae: Motile, hydrogen sulfide (+)**, indole (-)
(D) Enterobacter aerogenes: Mot... Read More

Cyanobacterial mat on the shores of Lake Fryxell in the McMurdo Dry Valley region of Antarctica

The cyanobacterial mat is on the shores of Lake Fryxell in Taylor Valley- the McMurdo Dry Valley region of Antarctica. These organisms actively grow only a few weeks a year during December and January. Photo taken by Scott Craig and contributed by Dr. Laurie Connell. Read More

Endospore Stain Bacillus cereus

B. cereus was grown on urea agar for 6 days at 37 degrees C to induce spore formation.
The endospore stain was done using malachite green as the primary stain and safranin as counter the stain. Malachite green was applied to the smear and set over a steaming water bath for 10 min (stain was no... Read More

Human Immunodeficiency Virus 3D

Illustration First Place Winner NSF International Science & Engineering Visualization Challenge

At first glance, it could pass for a piece of crochet, a fluffy gray and orange ball. But its real-world counterpart is far more destructive: It claims an estimated 2 million lives a year and has w... Read More

Plasmodium vivax

Plasmodium vivax young trophozoite with Schuffner's stippling Read More

Conidiophores of Exophiala jeanselmei

Conidiophores of Exophiala jeanselmei, LCB stain Read More

Gram-negative rods and coccobacilli

Gram-negative rods and coccobacilli. (Proteus vulgaris) (approx X1000). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Simple safranin stain of B. subtilis

Simple safranin stain of B. subtilis and central location of unstained spores. (Approx. original X 1000). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Bacillus subtilis colonies

Irregular, umbonate, opaque Bacillus subtilis colonies on the surface of a nutrient agar plate. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. 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

Enterobacter aerogenes on MacConkey Agar (Mac)

Streak plate isolation of Enterobacter aerogenes grown on MacConkey agar for 24 hours at 37 degree's. Colonies grow pink due to fermentation of lactose. Read More

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