This photomicrograph depicts a Treponema pallidum bacterium, a spirochete 5 - 15 micrometers in length, which is the causative agent of syphilis.
Syphilis, is passed from person to person through direct contact with a syphilis sore. Sores occur mainly on the external genitals, vagina, anus, or ... Read More
If we can visualize a protein's shape, we can learn much more about how it functions and how we might block its activity. This was the guiding principle behind an NIH initiative launched 25 years ago to spur the discovery of HIV-related protein structures. Structures produced through the program... Read More
Prosthogonimus macrorchis, a flatworm poultry parasite.
A digenetic trematode (family Prosthogonimidae) located in the oviduct and bursa fabricii of poultry in North America, particularly common in states bordering the Great Lakes. (http://www.medilexicon.com) Credit: Mr. Spike Walker
2010... Read More
Photo taken by Joshua Yospyn for WJLA TV at the We Can End AIDS march in Washington, D.C. Read More
A single Vorticella species. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More
Nikon's Small World 2012 Photomicrography Competition
Dr. Diana Lipscomb
George Washington University
Department of Biological Sciences
Washington, District of Columbia, USA
Sonderia sp. (a ciliate that preys upon various algae, diatoms, and cyanobacteria) (400x)
Tec... Read More
This poster has ten (10) mildly interesting facts about antibiotics, just in case you needed a poster or handout for Antibiotic Awareness Week (Nov 18-24, 2013). You can download PDF at "source" URL, above. Please feel free to share this graphic with your students, classmates, colleagues, frien... Read More
Escherichia coli isolated from a patient with diarrhea on MacConkey Agar.
Its simply beautiful, one of the first isolations I made. Read More
View an interactive animation of the life cycle of the malaria parasite, of the genus Plasmodium. The lifecycle of the malaria parasite is split between female mosquitoes and humans. In the mosquito gut, the parasites complete sexual reproduction and then multiply rapidly to produce many more p... Read More
Did you know that your body is home to 10 times more microbes than human cells? Join us at ASM Headquarters on Thursday, July 19, 2012, from 6-8 PM to learn about the human microbiome and its fascinating practical applications. Come mingle with like-minded enthusiasts and curious citizens ove... Read More
In 2009 researchers from the UT Health Science Center San Antonio and other institutions crack the genetic code of Schistosoma mansoni, a flatworm that can live up to 10 years on average in humans. The parasite is endemic in many tropical areas of the world.
Nature (16-Jul-2009) Read More
Gram-stained preparation of Bacillus subtilis showing rods, and spores (empty areas). (approx. 1000 X). Taken from the Wistreich Collection. Read More
Streptomyces spp. on various cultivation media. Production of different pigments and formation of aerial mycelia. Colonies after approximately 15 days of cultivation in aerobic atmosphere, 28°C. Environmental isolates.
Streptomyces is the largest genus of Actinobacteria and the type genus of ... Read More
An isolated Klebsiella oxytoca on MacConkey Agar from a patient with diarrhea. Look at its mucous appearance a characteristic of most Klebsiella. Read More
Micrasterias is a Desmid - a group of green algae mostly found in neutral to acidic fresh waters and sphagnum bogs. Most are unicellular, though a few form chain-like colonies. Each cell is constructed of 2 semicells which are mirror images of each other. In Micrasterias the cells are flattened ... Read More
Under a magnification of 200x, and using a lactophenol cotton blue mount fixation technique, this photomicrograph reveals some of the ultrastructural morphology exhibited by a Mucor sp. fungal organism. This image depicts two sporangia, a mature structure, which had ruptured, releasing its conte... Read More
As the bacteria grow within a biofilm, they organize themselves into reproducible patterns and shapes that can be predicted with mathematical models.
Image: Confocal microscopy of a bacterial biofilm composed of Escherichia coli expressing the fluorescent proteins mCherry and sfGFP. The image w... Read More
In this blog, I share some "first word that comes to mind" responses of my freshman biology class to the words "germ," "bacteria," "cell," and "DNA." The way that we perceive an idea or concept definitely impacts our relationship with it. Thus, finding out what students think, coming into our ... Read More
As a closer view of PHIL 12265, this photograph depicts the colonial morphology displayed by Gram-negative Yersinia pestis bacteria, which was grown on a medium of sheep's blood agar (SBA), for a 72 hour time period, at room temperature. Y. pestis is the bacterium responsible for causing the inf... Read More