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Quantitative precipitin test

Quantitative precipitin test. Constant antibody with 2-fold increase in antigen concentration. Note inhibition in antigen excess and precipitation in equivalence zone. Read More

Mining Marine Microbes for New Drugs

This slideshow outlines the work of WHOI scientists Tracy Mincer and Kristen Whalen in the quest to beat antibiotic resistance through bioprospecting in the ocean. Read More

Tricky Trichy

Trichomonas vaginalis is a protozoan parasite of the urogenital tract in men and women and causes a sexually transmitted disease, trichomoniasis, in about half of infected women. Infections are associated with pelvic inflammatory disease, adverse pregnancy outcomes, infertility, an increased inc... Read More

Corynebacterium - Tissue section

Corynebacterium - Tissue section. H & E stain. Diphtheritic tonsillitis Read More

Salmonella grown on Salmonella-Shigella (S-S) Agar

The following picture shows the isolated black colonies of Salmonella on Salmonella-Shigella (S-S) Agar. S-S Agar is used as a selective and differential medium for the isolation of Salmonella and some Shigella species. The inclusion of bile salts is to inhibit gram-positive organisms. Ferric ci... Read More

Streptococcus pyogenes Gram Stain

Gram stain done on S. pyogenes showing the characteristic long G+ streptococcus chains. Culture grown on blood agar for 48 hrs at 37 degree’s C. Read More

High rate of Texas bugs carrying Chagas disease

A deadly parasite that causes Chagas disease is widespread in a common Texas insect, according to a new study by University of Texas at El Paso (UTEP) researchers. The finding suggests that the risk of Texans contracting the disease may be higher than previously thought. Read More

Mycoplasma pneumoniae

Mycoplasma pneumoniae. Macrophotograph of 16mm petri dish containing micro-colonies (spherules) characteristics of broth-grown Mycoplasma pneumoniae Read More

Negative stain smallpox virus

Magnification 65,000X.

Smallpox is a serious, highly contagious, and sometimes fatal infectious viral disease. There is no specific treatment for smallpox disease, and the only prevention is a smallpox vaccination. Read More

In very ill, probiotics don't prevent 'superbugs' from colonizing intestinal tract

Compared with routine medical care, probiotics administered to critically ill patients in intensive care units showed no benefit in preventing the colonization of drug-resistant microbes in the intestinal tract, according to new research at Washington University School of Medicine in St. Louis. Read More

Several paramecia showing internal structures

Several paramecia showing internal structures. From the Wistreich Collection. Read More

Pulsating response to stress in bacteria

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

Rhizopus microsporus

Rhizopus microsporus
It causes human mucormycosis and bovine mycotic abortion.
It is distinguished from R.arrhizus by its shorter stalk, and smaller sporangia and spores.
Variant forms
Var.oligosporus : has elongated columellae ; spores less obviously striated.
Var.rhizopodiformis : has ... Read More

Activated Sludge

Activated sludge. Stalked ciliates grazing the sludge material (1000X) Read More

"The Unseen World"

Philadelphia artist Kate Kaman (www.katekaman.com) has designed a dynamic larger-than-life sculptural depiction of the most plentiful and ancient microscopic life forms -- bacteria. Suspended throughout an area measuring approximately 130 feet long, 27 feet wide and 41 feet tall, “The Unseen Wor... Read More

Anopheles gambiae (mosquito) heart

Malaria’s impact worldwide is still an issue, particularly in developing countries. Research is ongoing to study the carriers of malaria, mosquitoes, and how they carry and transmit the disease and other pathogens. That’s why the 2010 winning image by Jonas King is so important to the life scien... Read More

Neisseria meningitidis in sputum. Gram stain (1000X)

Neisseria meningitidis in sputum. Gram stain (1000X) Read More

Methicillin-Resistant Staphylococcus aureus (MRSA) Bacteria

Scanning electron micrograph of methicillin-resistant Staphylococcus aureus bacteria (yellow, round items) killing and escaping from a human white cell. Credit: National Institutes of Health/Department of Health and Human Services (NIAID) Read More

Chip-based technology enables reliable direct detection of Ebola virus

A team led by researchers at UC Santa Cruz has developed chip-based technology for reliable detection of Ebola virus and other viral pathogens. The system uses direct optical detection of viral molecules and can be integrated into a simple, portable instrument for use in field situations where r... Read More

Micrococcus luteus line inoculation

Line inoculation of Micrococcus luteus on a TSA slant showing Filiform, uniform growth, along the margin. Culture was grown for 3 days at 37 degrees, M. luteus usually takes 3+ days for good growth. Read More
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