This digitally-colorized scanning electron micrograph (SEM) depicted large numbers of Gram-positive Enterococcus faecalis sp. bacteria.
“Enterococci, leading causes of nosocomial bacteremia, surgical wound infection, and urinary tract infection, are becoming resistant to many and sometimes al... Read More
tetanus in a mouse showing body curvature (opisthotonos) Read More
When I first saw this photomicrograph of Haemophilus influenzae via immunofluorescence, I thought of the opening days of the first Gulf War, when CNN showed wall to wall images of the bombing of Baghdad. The crude nightvision technologies available at the time rendered everything in that green/... Read More
Pseudomonas aeruginosa is a common bacterium which can cause disease in animals and humans.
An equal opportunity offender, it uses a wide range of organic material for food; in animals, this versatility enables 'ol Pseudomon here to infect damaged tissues or people with reduced immunity.
The... Read More
Virus-bacterium associations were examined in the natural environment of a termite's hindgut. Three general scenarios were seen. In the first (1) there was a one-to-one association: one type of virus matched one type of bacterium host. In the second (2) the host bacterium was associated wi... Read More
This scanning electron micrograph (SEM) depicts a number of Leptospira sp. bacteria atop a 0.1. µm polycarbonate filter.
Leptospira interrogans causes leptospirosis, a usually mild febrile illness that may result in liver or kidney failure. Leptospira is a flexible, spiral-shaped, Gram-negati... Read More
This baby seal was found on the sea ice near McMurdo Station during one of many excursions to collect soil samples for microbiological analysis. During November and December, there are many baby seals in the area. Photo taken by Hubert Staudigel from the Scripps Institution of Oceanography and... Read More
Corynebacterium diphtheriae. Elek plates showing lines of identity. Paper strip is saturated with antitoxin organisms (black growth) producing toxin Read More
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
: 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
The tiny water bacterium Caulobacter crescentus secretes a sugary substance so sticky that just a tiny bit could hold several cars together. First, it attaches to a surface at the end of its cell body, which has a propeller-like flagellum. On contact, the flagellum stops moving with help from ne... Read More
Under a low magnification of 23X, this scanning electron micrograph (SEM) depicted a dorsal view of an unidentified male Dermacentor sp. tick found upon a cat in the suburbs of Decatur, Georgia, which measured approximately 3.5mm from its gnathosoma (i.e., capitulum), which is where its mouthpa... Read More
Gram-positive cocci showing various morphological arrangements including diplococcus and tetrads. (approx. X970). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
Cyanobacteria (Phormidium) with the vital stain Sytox Green. These cells are dead (green). White arrow shows other bacteria living in association with the cyanobacteria. Read More
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
Ahh the Human Respiratory Syncytial Virus - more commonly known as RSV. The last 2 times we' ve met it's been sick infants, ambulance calls, & in 1 case a hospital admit. In the United States, 60% of infants are infected during their first RSV season, and nearly all children will have been ... Read More