The results of a pour plate using Serratia marcescens as the inoculum. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
Lipid Plate/Tributyrin Agar used to test for an organisms ability to produce the exoenzyme lipase which breaks down the lipids in the agar creating a clear zone around the organism. (A) Serratia marcesens, lipid hydrolysis, indicated by a zone of clearing around the growing colony, as well as th... Read More
Subglacial outflow from the Taylor Glacier in the McMurdo Dry Valleys, Antarctica. Iron and salt precipitates form where subglacial brine flows from the Taylor Glacier, lending a bright red color to the glacier snout, which is commonly referred to as Blood Falls. The episodic release of subglaci... Read More
Artist Laura Splan has created lace doilies, aka ornamental mats, of the herpes and SARS viruses.
Excerpt from Artists's Bio: My work explores perceptions of beauty and horror, comfort and discomfort. I use anatomical and medical imagery as a point of departure to explore these dualities an... Read More
Colony of Streptomyces (sp.) on Sabouraud's dextrose agar, incubated at 30C Read More
Listeria monocytogenes has a particular tropism for the central nervous system. To gain knowledge about the immune response elicited by L. monocytogenes in the brain, we used a rat ex-vivo organotypic nervous system culture as a model for Listeria infection. Brain sections were maintained severa... Read More
Phase contrast flash of Hymenomonas sp., a coccolithophorid phytoflagellate Read More
The mosquito - God's cruelest instrument to ensure his creations stay in check?
The mosquito - proof that Evolution is a malevolent mistress that sups on human & animal misery alike?
The mosquito - spreader of VEE: Venezuelan equine encephalitis, which afflicts not only horses, donkeys, zebras... Read More
photograph of hematoma-like swelling of the caruncle of turkeys infected with Erysipelothrix rhusiopathiae Read More
Rothia dentocariosa. Granular microcolonies, 18 hour aerobic growth on trypticase soy agar (250X) Read More
This digitally-colorized transmission electron micrograph (TEM) revealed the presence of hepatitis B virions. The large round virions are known as Dane particles.
Hepatitis means inflammation of the liver. Toxins, certain drugs, some diseases, heavy alcohol use, and bacterial and viral infec... Read More
Histoplasma capsulatum in mitral valve. Yeasts and rare hyphal growth in vivo Read More
This photograph depicts the colonial growth pattern displayed by Salmonella typhimurium bacteria cultured on a Hektoen enteric (HE) agar medium; S. typhimurium colonies grown on HE agar are blue-green in color, for this organism is a lactose non-fermenter, but it does produce hydrogen sulfide, (... Read More
Because it isn't just for Establishment squares anymore!
As WellBee - debuted in 1964 - so aptly illustrates, (in a slightly dated style, considering the presence of readily available finger-nail toothpicks) simple hand washing is the most important tool available to prevent the spread of a who... Read More
This colorized negative-stained transmission electron micrograph (TEM) depicts the ultrastructural details of a number of influenza virus particles, or “virions”. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organism
The flu is a contagious r... Read More
Little brown bat; close-up of nose with fungus, New York, Oct. 2008.
Credit: Photo courtesy Ryan von Linden/New York Department of Environmental Conservation
What is white-nose syndrome?
In February 2006 some 40 miles west of Albany, N.Y., a caver photographed hibernating bats with an unusu... Read More