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This image was made from samples taken during a scientific cruise in the Pacific. Water was filtered to concentrate the organisms that were present, then dried onto a thin sheet of plastic and then shadowed with a fine layer of metal to provide contrast. The preparation was then observed with an electron-microscope. This technique has been used to document the diversity of marine microbes, especially, protists in the oceans.
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Botrydium (bot-rid-ee-um), xanthophyte - a group of walled stramenopiles although unlike most stramenopiles with plastids, the xanthophytes have a much greener colour. Botrydium is usually assigned to the Vaucheriales, which are characterised by being able to adopt a coenocytic (multinucleate) body form. Normally grows on mud. Phase contrast.
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Hjerritsdal ved Mariager Fjord, Danmark
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Aiguaviva, Catalonia, Spain
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This image was made from samples taken during a scientific cruise in the Pacific. Water was filtered to concentrate the organisms that were present, then dried onto a thin sheet of plastic and then shadowed with a fine layer of metal to provide contrast. The preparation was then observed with an electron-microscope. This technique has been used to document the diversity of marine microbes, especially, protists in the oceans.
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Botrydium (bot-rid-ee-um), xanthophyte - a group of walled stramenopiles. Botrydium is usually assigned to the Vaucheriales, which are can adopt a coenocytic (multinucleate) body form - as is illustrated here. Normally grows on mud, often with aerial and subsurface elements. This image shows a number of the forms adopted by the vegetative cells. Differential interference contrast optics.
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Hjerritsdal ved Mariager Fjord, Danmark
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Pseudopleurochloris (sue-dough-plue-row-chlo-riss). xanthophyte, one of the autotrophic stramenopile taxa. This genus is one which is found predominantly as a coccoid (rounded) form. Peripheral chlorophyll a and c containing plastids. Differential interference contrast.
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Botrydium (bot-rid-ee-um) xanthophyte - a group of walled stramenopiles although unlike most stramenopiles with plastids, the xanthophytes have a much greener colour. Botrydium is usually assigned to the Vaucheriales, which are characterised by being able to adopt a coenocytic (multinucleate) body form. Normally grows on mud, often with aerial and subsurface elements. This image shows a number of the forms adopted by the vegetative cells. Phase contrast.
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Hjerritsdal ved Mariager Fjord, Danmark
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Mischococcus (mish-owe-cock-us) (maybe) a chrysophyte stramenopile in which the cells are located in a branching mucoid matrix. Identification tentative. Phase contrast.
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Tribonema (tribe-owe-knee-ma) is a xanthophyte, a group of stramenopiles with chloroplasts. Xanthophytes may adopt a variety of body forms, and the normal form for this genus is the filament. Cell walls often built from H-shaped units, and these overlap in the middle of a cell. Stalked attached cells also occur, as is evident here. Plastids usually discoid, yellow green. Differential interference contrast.
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Kirkedals bæk ved Hobro, Danmark
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Tribonema (tribe-owe-knee-ma) is a xanthophyte, a group of stramenopiles with chloroplasts. Xanthophytes may adopt a variety of body forms, and the normal form for this genus is the filament. Cell walls often built from H-shaped units, and these overlap in the middle of a cell. Stalked attached cells also occur, as is evident here. Plastids usually discoid, yellow green. Differential interference contrast.
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Tribonema (tribe-owe-knee-ma) is a xanthophyte, a group of stramenopiles with chloroplasts. Xanthophytes may adopt a variety of body forms, and the normal form for this genus is the filament. Cell walls often built from H-shaped units, and these overlap in the middle of a cell. Stalked attached cells also occur, as is evident here. Plastids usually discoid, yellow green. Phase contrast
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Tribonema (tribe-owe-knee-ma) is a xanthophyte, a group of stramenopiles with chloroplasts. Xanthophytes may adopt a variety of body forms, and the normal form for this genus is the filament. Cell walls often built from H-shaped units, and these overlap in the middle of a cell. Plastids usually discoid, yellow green. Differential interference contrast.
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Specimen of Characiopsis spec, probably Ch. acuta. The microscope is focussed on the chloroplast. Digital drawing using 6 frames generating depth of focus, stacked manually using Corel Photopaint. Aufwuchs on Oedogonium which itself was Aufwuchs on roots dangling in a creek. This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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Tribonema (tribe-owe-knee-ma) is a xanthophyte, a group of stramenopiles with chloroplasts. Xanthophytes may adopt a variety of body forms, and the normal form for this genus is the filament. Plastids usually discoid, yellow green. Phase contrast.
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Specimen of Characiopsis spec, probably Ch. acuta. The microscope is focussed on the stigma. Digital drawing using 6 frames generating depth of focus, stacked manually using Corel Photopaint . Aufwuchs on Oedogonium which itself was Aufwuchs on roots dangling in a creek. This image was taken using Zeiss Universal with Olympus C7070 CCD camera.
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Tribonema (tribe-owe-knee-ma) is a xanthophyte, a group of stramenopiles with chloroplasts. Xanthophytes may adopt a variety of body forms, and the normal form for this genus is the filament. Cell walls often built from H-shaped units, and these overlap in the middle of a cell. Stalked attached cells also occur, as is evident here. Plastids usually discoid, yellow green. Phase contrast.
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Ophiocytium (off-ee-o-sit-ee-um), a xanthophyte, one of the stramenopiles. There is considerable variation in form within this group, this form often being considered to be coccoid - here used to mean not just round cells but cells without cross walls, elongate curving or spiral, typically attaching with a stalk. Two or more nuclei, two or more plastids and, as is typical of xanthophytes, with a two part wall. Phase contrast.