If the laboratory is not able to identify group-B streptococci (GBS) by the Lancefield grouping procedure, there are other microbiologic tests that can be used to identify GBS. This picture shows one of these tests. It is called the CAMP test. CAMP is an acronym for the authors of this test (Chr...
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Normal guinea pig eye (see http://www.microbeworld.org/index.php?option=com_jlibrary&view=article&id=2524 for other, infected eye via Sereny test).
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Bright red-orange photoluminescence observed from porous silicon nanoparticles with human HeLa cells
Bright red-orange photoluminescence observed from porous silicon nanoparticles with human HeLa cells, magnified 1000 times and viewed in the reflection from a silicon wafer. Prepared from high-purity silicon wafers, these nanoparticles provide a nontoxic and biodegradable alternative to conventi...
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Magnified 1125X, this Gomori-stained photomicrograph revealed the presence of a Penicillium marneffei yeast cell, which was found in a specimen of human spleen.
P. marneffei is endemic to Southeast Asia, where it is one of the more common HIV-related opportunistic infections. Penicillium spp.... Read More
Histoplasma capsulatum in intestinal villi of brown house bat. Eptesicus fuscus from house near Clarksburg, MD. GMS stain
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clostridium perfringens lecithinase activity 6x
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Aspergillus fumigatus. Typical dichotomous branching of hyphae in pulmonary lesion of a horse. PAS stain
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Neisseria meningitidis colonies on chocolate agar with positive oxidase test as indicated by black colonies (1:2)
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The U.S. Centers for Disease Control has just published a page that offers several public domain images of the H1N1 virus and several 3D graphical representations of seasonal influenza virus. There is also an image of the CDC developed PCR diagnostic test to detect novel H1N1 virus. The images a...
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Basidiobolus haptosporus. One subspherical spore which has been produced by replication and one adhesive spore produced by replication
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Eggs of Hymenolepis diminuta. These eggs are round or slightly oval, size 70 - 85 µm X 60 - 80 µm, with a striated outer membrane and a thin inner membrane. The space between the membranes is smooth or faintly granular. The oncosphere has six hooks. There are no polar filaments extending into...
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A clear view of a Spirogyra filament showing the spiral chloroplast. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld.
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A close-up of the surface of a streak plate using a mixed culture of Serratia marcescens and Micrococcus lutea as the inoculum. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld.
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Magnified 475X, this photomicrograph depicts some of the structural morphology of numerous Trichophyton violaceum fungal organisms. This dermatophyte had been grown in a medium of Sabouraud dextrose agar, and of note are the organism’s mycelia, or branching hyphae, i.e., the vegetative portion o...
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A dying pelican crawls away from the surf to die on the beach of Paita, Peru on May 2, 2012. According to Peruvian vice minister of Environment, Gabriel Quijandria, the cause of death of thousands of fish, sea birds and diverse animal wildlife that has been washing ashore in the northern coasts ...
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