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Portrait of the cyanophyte, Aphanizomenon flosaquae. Collected from freshwater pond near Boise, Idaho. Brightfield optics.
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Cylindrospermopsis (sill-in-dro-sperm-op-sis) raciborskii, a blue green alga (cyanobacterium) in which the terminal cells of the trichomes or filaments appear a bit like candle flames. With no membrane bound organelles but sometimes with refractile deposits. Differential interference microscopy.
data on this strain.
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Anabaena (a-na-bean-a) is a filamentous cyanobacterium, the slightly larger cells are heterocysts, and are associated with nitrogen fixation. Nitrogen fixing cyanobacteria are important for nitrogen generation in rice paddy fields. Differential interference contrast.
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Cylindrospermopsis (sill-in-dro-sperm-op-sis) raciborskii, a blue green alga (cyanobacterium) in which the terminal cells of the trichomes or filaments appear a bit like candle flames. With no membrane bound organelles but sometimes with refractile deposits. Phase contrast microscopy.
data on this strain.
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Anabaena (ann-a-bean-ah) (tentative identification) filaments with heterocysts and cells of variable size. Differential interference contrast.
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Cylindrospermopsis (sill-in-dro-sperm-op-sis) raciborskii, a blue green alga (cyanobacterium) in which the terminal cell of the trichome (filament) appears a bit like a candle flame. Phase contrast microscopy. "
data on this strain.
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Anabaena (ann-a-bean-a) one of the filamentous blue green alga which can form heterocysts. Single filaments are attached to the substrate and occur within an irregular mucus sheath which acquires metal salts to become brown in colour. Heterocysts are spherical, more hyaline, slightly larger than other cells and are a site for enhanced nitrogen fixation. Phase contrast.
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Tolypothrix (toe-leap-owe-thricks), a filamentous and branching blue green alga (cyanobacterium) with a heterocyst located at the base of each branch point. Filaments within a well developed sheath. Differential interference contrast.
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Anabaena (ann-a-bean-a) one of the filamentous blue green alga which can form heterocysts. Single filaments are attached to the substrate and occur within an irregular mucus sheath which acquires metal salts to become brown in colour. Heterocysts are spherical, more hyaline, slightly larger than other cells and are a site for enhanced nitrogen fixation. Differential interference contrast.
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Tolypothrix (toe-leap-owe-thricks), a filamentous and branching blue green alga (cyanobacterium) with a heterocyst located at the base of each branch point. Filaments within a well developed sheath. Phase contrast.
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Anabaena (ann-a-bean-a) one of the filamentous blue green alga which can form heterocysts. Single filaments are attached to the substrate and occur within an irregular mucus sheath which acquires metal salts to become brown in colour. The sheath is emphasized in this image. Heterocysts are spherical, more hyaline, slightly larger than other cells and are a site for enhanced nitrogen fixation. Phase contrast.
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Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation. This image shows a tangle of filaments. Differential interference microscopy.
data on this strain.
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Anabaena (ann-a-bean-a) a filamentous blue green algae, with differentiated cells within the filament or trichome. Differential interference microscopy.
data on this strain.
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Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Two false branches are shown in this image. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation, and three are prominent in this image. Differential interference microscopy.
data on this strain.
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Anabaena (ann-a-bean-a) a filamentous blue green algae, with differentiated cells within the filament. The central cell is a heterocyst, the site of nitrogen fixation. Differential interference microscopy.
data on this strain.
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Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation. In this image, the empty-looking heterocyst is located within the trichome and has a rectanglular shape. Differential interference microscopy.
data on this strain.
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Anabaena (ann-a-bean-a) filamentous blue-green alga (cyanobacterium), some cells are different to others. They are referred to as heterocysts, and seem to be specialised to carry out nitrogen fixation. Differential interference contrast.
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Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation. In this image, the heterocyst is terminal and has a hemispherical shape. Differential interference microscopy.
data on this strain.
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Anabaena. Cell observed in freshwater sediments in the vicinity of Broome, Western Australia in September 2003. This image was taken using differential interference contrast optics. This work was supported by the Australian Biological Resources Study.
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The cyanobacteria genus Aphanizomenon is well known as an ingredient of health food providing lots of vitamins and trace elements. Collected from littoral region (stand of Phragmites) 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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A gliding filamernt of Anabaena, a couple of heterocysts are visible within the filament.
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Aphanizomenon is a cyanobacterium that often occurs in large aggregates. This was isolated on 4th April in a 20 micron plankton net haul at Sällvik (sample 4). Phase contrast micrograph.
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Filaments of Anabaena. The species may form heterocysts (thick walled cell, lower filament last complete cell on the right) and also resistant cells such as the long cylindrical cell. Phase contrast microscopy.
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Aphanizomenon is a cyanobacterium that often occurs in large aggregates. This was isolated on 4th April in a 20 micron plankton net haul at Sällvik (sample 4). Phase contrast micrograph.