In this post from my microbiology/education blog, I discuss a post on Boing Boing recently that used a video I had made of ice nucleation bacteria. Ice nucleation bacteria are very interesting of course, and I link to the Boing Boing post. In addition, I provide an additional video of students... Read More
Helicobacter is a Gram-negative rod with a helical shape on gram stain. The most known strain is H. pylori, which causes ulcers and chronic gastritis and is said to affect up to 50% of the human population. This particular strain, Helicobacter fennelliae is most commonly found in the feces an... Read More
Remember SARS? Or the last time you had a nasty cold? Lay your troubles at this bad-boy's door.
In fact, SARS-CoV - the Corona variant that causes SARS - has the rather unique quality of causing both upper & lower respiratory infections, and gastroenteritis.
Note as well that the Coronavi... Read More
Lactophenol cotton blue wet preparation of scraping from oral lesion, showing pseudohyphae of Candida albicans Read More
CHAMPAIGN, Ill. -- It might not be possible to convince someone who believes that vaccines cause autism that they don't. Telling skeptics that their belief is not scientifically supported often backfires - strengthening, rather than weakening, their anti-vaccine views. But researchers say they h... 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
Two worm sperm shimmy across a microscope slide. Unlike most cells that rely on motor proteins to propel themselves forward, worm sperm use tiny fibers at their front ends. Putting the fibers together and taking them apart sets the cells in motion. In a new advance, researchers disassembled the ... Read More
Circular, smooth, entire, opaque colonies of Alcaligenes on a nutrient agar plate. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
Neisseria meningitidis in sputum. Gram stain (1000X) Read More
2009 Nikon Small World Competition award 10th place: Leave it to the diminutive diatoms to bring out algae's best side. Only 10 times larger than life, this image was captured via dark-field by Arlene Wechezak in Anacortes, Wash. Such diatoms have been proposed as a key biofuel source of the fut... Read More
Researchers at Harvard University and the University of California, San Diego, have developed a new user-friendly resource to accompany the powerful gene editing tool called CRISPR/Cas9, which has been widely adopted to make precise, targeted changes in DNA. This breakthrough has the potential t... Read More
For thousands of years, people have used yeast to ferment wine, brew beer and leaven bread. Now researchers at Stanford have genetically engineered yeast to make painkilling medicines, a breakthrough that heralds a faster and potentially less expensive way to produce many different types of pla... Read More
please send input as to the nature of this. things I know: zoonotic, fast reproduction, fruiting bodies, possible yeast, cryptococcus? Dicty?some maturing cysts filled with red, one-two red dots. Read More
Illustration of sites of embryonated egg inoculation Read More
This blog post describes a "video meeting" between Seth Bordenstein and my freshman writing class in the Fall of 2014. My freshman class revolved around ideas in symbioses and parasitism, so Seth's ideas regarding holobionts and the hologenome were particularly apt. Furthermore, last week Seth... Read More
Streptococcus pneumoniae cells are Gram-positive, lancet-shaped cocci. Usually, they are seen as pairs of cocci, but they may also occur singly and in short chains. In this photo a mucoid strain on blood agar showing alpha hemolysis (green zone surrounding colonies). Note the zone of inhibition ... Read More
As the old saying goes, can beat a pound of the Shigella bacteria, seen here penetrating the intestinal mucosa of some poor soul.
Killing approx. 1 million people annually - most of them children, Shigella is best prevented by two simple strategies: washing hands before handling food & thorou... Read More