By attaching fluorescent proteins to the genetic circuit responsible for B. subtilis's stress response, researchers can observe the cells' pulses as green flashes.
In response to a stressful environment like one lacking food, B. subtilis activates a large set of genes that help it respond to ... Read More
In a study released today in Nature Genetics, researchers have found that Chlamydia has evolved more actively than was previously thought. Using whole genome sequencing the researchers show that the exchange of DNA between different strains of Chlamydia to form new strains is much more common th... Read More
Swarm of paramecia surrounding an unidentified protozoan. From the Wistreich Collection. Read More
Wired magazine has put together an 8-part image gallery that matches the extremophile microbe with it's environment.
"Once upon a time, scientists routinely found life in places where it wasn’t supposed to exist. That doesn’t happen anymore, and not because the pace of discovery has s... Read More
Quantitative precipitin test. Constant antibody with 2-fold increase in antigen concentration. Note inhibition in antigen excess and precipitation in equivalence zone. Read More
This image depicts the quantitative difference in hemolytic reactivity seen in a trypticase soy agar culture plate containing 5% sheep’s blood growing group-D Streptococci (left wedge), group-B Streptococci (middle wedge), and group-A Streptococci (right wedge) bacteria. This plate was grown u... Read More
Nature has just published a news special on microscopes and microscopy. Most of the associated articles are pay-per-view but the slideshow of images is free to check out. Click the source link above. Read More
photograph of carcass of swine showing lesions of swine erysipelas (b&w) Read More
Mycobacterium buberculosis. young colony on a brain heart infusion. typical virulent strain Read More
Bacteroides fragilis colonies on blood agar (1:5) Read More
Electron micrograph of influenza virus negatively stained with phosophotungstic acid Read More
photograph of the skin lesions in man with the septicemic type of infection with erysipelothrix rhusiopathiae Read More
Serratia spp. are widely distributed in nature. Serratia marcescens is the most common Serratia sp. associated with human disease, followed by strains of the S. liquefaciens complex: S. liquefaciens, S. grimesii and S. proteamaculans. The clinical significance of these species is largely unknown... Read More
SEM showing bacteria in close association with human intestinal brush border cells (12000X) Read More