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
As the bacteria grow within a biofilm, they organize themselves into reproducible patterns and shapes that can be predicted with mathematical models.
Image: Confocal microscopy of a bacterial biofilm composed of Escherichia coli expressing the fluorescent proteins mCherry and sfGFP. The image w... Read More
This photomicrograph is showing Neisseria gonorrhoeae in a cervical smear using the Gram-stain technique. Thanks to the CDC's PHIL for the image. Read More
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
As a closer view of PHIL 12265, this photograph depicts the colonial morphology displayed by Gram-negative Yersinia pestis bacteria, which was grown on a medium of sheep's blood agar (SBA), for a 72 hour time period, at room temperature. Y. pestis is the bacterium responsible for causing the inf... Read More
Scanning Electron Micrograph of Burkholderia cepacia.
Burkholderia cepacia is the name for a group or “complex” of bacteria that can be found in soil and water. B. cepacia bacteria are often resistant to common antibiotics.
B. cepacia poses little medical risk to healthy people. However,... Read More
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
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
Confocal micrograph of wheat stigma hairs (blue) infected with ergot fungus (light pink). The stigma is the female part of the plant. The plant is fertilised by the (male) pollen grain, which sticks to a stigma hair causing growth of a pollen tube into the plant's ovary, causing an embryonic whe... Read More
The bacterium, Enterococcus faecalis, which lives in the human gut, is just one type of microbe that will be studied as part of NIH's Human Microbiome Project. Read More
Dark-field preparation of Treponema pallidum. (approx X1000). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
Pseudomonas aeruginosa. Imepinem did that wird zone next to ampicilin sulbactam. Wat phenomen are that? Its that synergism? And it wil have activity in vivo? Thnx
The presence of a pellicle on the surface of a broth medium. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
Crystal violet stained cocci. Tetrads, and diplococcal and staphylococcal arrangements are present. (approx. 1000 X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
bc5 - A close-up view of a pour plate using Serratia marcescens as the inoculum. A variety of colonial shapes can be seen. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
Gram-stained preparation of Bacillus subtilis showing rods, and spores (empty areas). (approx. 1000 X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
the results of this investigation revealed that the marine actinomycetes collected from the sediments of Caspian Sea
might be a potent source of novel antibiotics. Read More
Large (about 5 mm in diameter), lactose positive colonies of Klebsiella pneumoniae on desoxycholate-citrate agar. Cultivation 37°C, 24 hours.
Klebsiella pneumoniae is a common source of hospital-acquired infections. Some of the strains can carry plasmids that harbour genes conferring resistan... Read More
This pair of confocal micrographs demonstrates how a disease-causing strain of E. coli bacteria brings about diarrhoea by breaking down the waterproof barriers between the cells. The bacteria are seen as small red dots attached to the surface of intestinal cells making tiny pedestals out of one ... Read More