Toxoplasma gondii is estimated to chronically infect nearly one-third of the world's population, causing the condition Toxoplasmosis. It is most commonly associated with handling cat feaces and is a particular threat to pregnant women and immune-compromised individuals, such as HIV/AIDS patients... 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
Researchers have discovered the largest virus ever, and they've given it a terrifying name: Pandoravirus.
A typical virus is a tiny sack of genetic material that injects itself into a much larger cell and uses it to make more viruses. The Pandoravirus is enormous by comparison—large enough to... Read More
Swarm of paramecia surrounding an unidentified protozoan. From the Wistreich Collection. Read More
Orange pigmented crustose lichens. From the Wistreich Collection. Read More
Neisseria meningitidis in sputum. Gram stain (1000X) Read More
A computer model shows side and top views of two different proteins produced by anthrax bacteria. The green molecule is "protective antigen" (PA), which spontaneously forms pores that penetrate organic membranes such as cell walls. The yellow molecule is "lethal factor (LF)." When a voltage is a... Read More
photograph of the skin lesions in man with the septicemic type of infection with erysipelothrix rhusiopathiae Read More
Several paramecia showing internal structures. From the Wistreich Collection. Read More
A photomicrograph of Salmonella bacteria. Courtesy of Pacific Northwest National Laboratory. Read More
Mycoplasma pneumoniae. Macrophotograph of 16mm petri dish containing micro-colonies (spherules) characteristics of broth-grown Mycoplasma pneumoniae Read More
With its abdomen engorged with a host blood meal, this image depicts a lateral, or side view of a female blacklegged, or deer tick, Ixodes scapularis.
The blacklegged or deer tick, Ixodes scapularis, transmits Lyme disease, a disease caused by a spiral shaped bacterial microbe, Borrelia burgdor... 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
Mmmmm, kinda looks like couscous right?
Well, though it might resemble a tasty side dish that's beloved in the Maghreb, it's actually a gnarly bacteria that causes URI's (upper respiratory infections) in both humans & animals.
Humans can prevent it by refraining from drinking unpasteurized mil... Read More
The New Scientist has published a nifty gallery of "psychedelic"-like images of human viruses. Many of them are from Government agencies so they are public domain. Click "source" to view the entire collection.
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