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Achromatium oxaliferum (Schewiakoff 1893), a large colorless sulpher bacterium from bottom sediments of a stagnant freshwater pond near Boise, Idaho. Brightfield.
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Villoslada de Cameros, La Rioja, Spain
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Achromatium oxaliferum (Schewiakoff 1893), a large colorless sulpher bacterium. The larger refractile spherical structures are calcite spherolites and the small globules adhering to them are granules of elemental sulphur. Collected from bottom sediments of a stagnant freshwater pond near Boise, Idaho.
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Achromatium oxaliferum (Schewiakoff 1893), a large colorless sulpher bacterium from bottom sediments of a stagnant freshwater pond near Boise, Idaho. DIC.
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Achromatium oxaliferum is a large colorless sulpher bacterium containing large refractile structures of calcite spherulites. Collected from bottom sediments of a rain storage reservoir in Kiel (Schleswig-Holstein, Germany). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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Multilayer image shows cell in conjugation. Scale bar indicates 50 µm.Sample from ponds situated in the vicinity of Lake Constance (Bodensee, Southern Germany). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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Portrait of the colorless sulfur bacterium Beggiatoa alba (VAUCHER, 1803) TREVISAN, 1845.
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Achromatium (a-chrome-ace-ee-um) one of the larger bacteria, relatively common, and usually distinguished by the presence of large sulphur deposits inside the cell. Phase contrast.
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Achromatium (a-chrome-ace-ee-um) is one of the non-photosynthetic sulphur bacteria. It is a heterotrophic bacterium which relies on a supply of organic matter to assist the degradation of reduced sulphur to elemental sulphur - which is then deposited as slightly pink granules inside the cell. Large (for a bacterium). Differential interference contrast.
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This picture compares Achromatium (a-chrome-ace-ee-um) (right) - a heterotrophic sulphur bacterium, from the red or purple sulphur bacterium, Chromatium. Differential interference contrast.
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Beggiatoa (beg-ee-a-toe-a) is a colourless sulphur bacterium which occurs as filaments of various widths. Beggiatoa is found in sediments above the reduced zone. It oxidizes hydrogen sulphide, producing elemental sulphur which is deposited within the bacterial cell as sulphur granules and give this filament its opaque appearance. Very long. These cells can glide, a good trait for organisms which live in a habitat the characteristics of which are changing depending on whether there is or is not overlying water or if or if not there is sunlight. Phase contrast.
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Beggiatoa (beg-ee-a-toe-a), commonly seen on the surface of very rich sediments - such as those of salt marshes. The bacteria metabolise reduced hydrogen sulphide and produce granules of sulphur as a by product. They can be seen as refractile elements within the cells which make up this filament. Phase contrast.
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This image depicts a Petri dish containing a buffered charcoal yeast extract (BCYE) agar medium, which had been inoculated with Gram-negative Francisella tularensis live vaccine strain (LVS) bacteria. F. tularensis is the pathogen responsible for causing the disease tularemia. This was the appearance of the colonial growth after 72 hours of incubation. What is tularemia?Tularemia, also known as rabbit fever, is a disease caused by the bacterium Francisella tularensis. Tularemia is typically found in animals, especially rodents, rabbits, and hares. Tularemia is usually a rural disease and has been reported in all U.S. states except Hawaii.How do people become infected with tularemia?Typically, people become infected through the bite of infected insects (most commonly, ticks and deerflies), by handling infected sick or dead animals, by eating or drinking contaminated food or water, or by inhaling airborne bacteria.Created: 2009
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Beggiatoa (beg-ee-a-toe-a), commonly seen on the surface of very rich sediments - such as those of salt marshes. The bacteria metabolise reduced hydrogen sulphide and produce granules of sulphur as a by product. They can be seen within the cells which make up this filament. Differential interference contrast.
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Beggiatoa (beg-ee-a-toe-a) is a colourless sulphur bacterium which occurs as filaments of various widths. Beggiatoa is found in sediments above the reduced zone. It oxidizes hydrogen sulphide, producing elemental sulphur which is deposited within the bacterial cell as sulphur granules and give this filament its opaque appearance. Layers of Beggiatoa are often seen on the surface of muds or other places where there is a lot of decaying organic matter (around dead dogs is a good place) and looks like white tissue paper lying over the sediment. These cells can glide, a good trait for organisms which live in a habitat the characteristics of which are changing depending on whether there is or is not overlying water or if or if not there is sunlight. Phase contrast.
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This image depicts a Petri dish containing a chocolate agar medium, which had been inoculated with Gram-negative Francisella tularensis live vaccine strain (LVS) bacteria. F. tularensis is the pathogen responsible for causing the disease tularemia. This was the appearance of the colonial growth after 72 hours of incubation. What is tularemia?Tularemia, also known as rabbit fever, is a disease caused by the bacterium Francisella tularensis. Tularemia is typically found in animals, especially rodents, rabbits, and hares. Tularemia is usually a rural disease and has been reported in all U.S. states except Hawaii.How do people become infected with tularemia?Typically, people become infected through the bite of infected insects (most commonly, ticks and deerflies), by handling infected sick or dead animals, by eating or drinking contaminated food or water, or by inhaling airborne bacteria.Created: 2009
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Beggiatoa (beg-ee-a-toe-a) is a colourless sulphur bacterium which occurs as filaments of various widths. Beggiatoa is found in sediments above the reduced zone. It oxidizes hydrogen sulphide, producing elemental sulphur which is deposited within the bacterial cell as sulphur granules. In this delicate filament, the individual sulphur grains can be seen as pink refractile inclusions. Phase contrast.
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Beggiatoa (beg-ee-a-toe-a) is a colourless sulphur bacterium which occurs as filaments of various widths. Beggiatoa is found in sediments above the reduced zone. It oxidizes hydrogen sulphide, producing elemental sulphur which is deposited within the bacterial cell as sulphur granules visible inside this filament . May be very long. These cells can glide, a good trait for organisms which live in a habitat the characteristics of which are changing depending on whether there is or is not overlying water or if or if not there is sunlight. They don t usually make these cute spirals. Differential interference contrast.
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This image depicts a Petri dish containing a sheeps blood agar (SBA) medium, which had been inoculated with Gram-negative Francisella tularensis live vaccine strain (LVS) bacteria. F. tularensis is the pathogen responsible for causing the disease tularemia. This was the appearance of the colonial growth after 48 hours of incubation. What is tularemia?Tularemia, also known as rabbit fever, is a disease caused by the bacterium Francisella tularensis. Tularemia is typically found in animals, especially rodents, rabbits, and hares. Tularemia is usually a rural disease and has been reported in all U.S. states except Hawaii.How do people become infected with tularemia?Typically, people become infected through the bite of infected insects (most commonly, ticks and deerflies), by handling infected sick or dead animals, by eating or drinking contaminated food or water, or by inhaling airborne bacteria.Created: 2009
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This image depicts a Petri dish containing a chocolate agar medium, which had been inoculated with Gram-negative Francisella tularensis live vaccine strain (LVS) bacteria. F. tularensis is the pathogen responsible for causing the disease tularemia. This was the appearance of the colonial growth after 48 hours of incubation. What is tularemia?Tularemia, also known as rabbit fever, is a disease caused by the bacterium Francisella tularensis. Tularemia is typically found in animals, especially rodents, rabbits, and hares. Tularemia is usually a rural disease and has been reported in all U.S. states except Hawaii.How do people become infected with tularemia?Typically, people become infected through the bite of infected insects (most commonly, ticks and deerflies), by handling infected sick or dead animals, by eating or drinking contaminated food or water, or by inhaling airborne bacteria.Created: 2009
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This image depicts a Petri dish containing a buffered charcoal yeast extract (BCYE) agar medium, which had been inoculated with Gram-negative Francisella tularensis live vaccine strain (LVS) bacteria. F. tularensis is the pathogen responsible for causing the disease tularemia. This was the appearance of the colonial growth after 48 hours of incubation. What is tularemia?Tularemia, also known as rabbit fever, is a disease caused by the bacterium Francisella tularensis. Tularemia is typically found in animals, especially rodents, rabbits, and hares. Tularemia is usually a rural disease and has been reported in all U.S. states except Hawaii.How do people become infected with tularemia?Typically, people become infected through the bite of infected insects (most commonly, ticks and deerflies), by handling infected sick or dead animals, by eating or drinking contaminated food or water, or by inhaling airborne bacteria.Created: 2009
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This image depicts a Petri dish containing a chocolate agar medium, which had been inoculated with Gram-negative Francisella tularensis live vaccine strain (LVS) bacteria. F. tularensis is the pathogen responsible for causing the disease tularemia. This was the appearance of the colonial growth after 24 hours of incubation. What is tularemia?Tularemia, also known as rabbit fever, is a disease caused by the bacterium Francisella tularensis. Tularemia is typically found in animals, especially rodents, rabbits, and hares. Tularemia is usually a rural disease and has been reported in all U.S. states except Hawaii.How do people become infected with tularemia?Typically, people become infected through the bite of infected insects (most commonly, ticks and deerflies), by handling infected sick or dead animals, by eating or drinking contaminated food or water, or by inhaling airborne bacteria.Created: 2009
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This image depicts a Petri dish containing a sheeps blood agar (SBA) medium, which had been inoculated with Gram-negative Francisella tularensis live vaccine strain (LVS) bacteria. F. tularensis is the pathogen responsible for causing the disease tularemia. This was the appearance of the colonial growth after 24 hours of incubation. What is tularemia?Tularemia, also known as rabbit fever, is a disease caused by the bacterium Francisella tularensis. Tularemia is typically found in animals, especially rodents, rabbits, and hares. Tularemia is usually a rural disease and has been reported in all U.S. states except Hawaii.How do people become infected with tularemia?Typically, people become infected through the bite of infected insects (most commonly, ticks and deerflies), by handling infected sick or dead animals, by eating or drinking contaminated food or water, or by inhaling airborne bacteria.Created: 2009