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Euglena oxyuris (you-glean-a ox-ee-your-is), is a moderate to large euglena, with a stiff pellicle that has well developed ridges. Flagella can be short. Although it can squirm it is not very actively metabolic. With large numbers of small plastids. This image is of a flattened cell, and it shows from front (left) to back: entrance to flagellar canal, eyespot, light region of the flagellar pocket, link-shaped paramylon grain, smaller paraymyloin grains, plastids and nucleus. The ridges of the pellicle are superimposed. Differential interference contrast.
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Euglena oxyuris (you-glean-a ox-ee-your-is), is a moderate to large euglena, with a stiff pellicle that has well developed ridges, and often - as we can see here - with a fold in the cell. Flagella can be short. Although it can squirm it is not very actively metabolic. With large numbers of small plastids. This image shows, one large -link-shaped element of paramylon, the pellicular ridges around the edge of the cell to the right, and the nucleus. Differential interference contrast.
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Euglena oxyuris (you-glean-a ox-ee-your-is), is a moderate to large euglena, with a stiff pellicle that has well developed ridges. Flagella can be short. Although it can squirm it is not very actively metabolic. With large numbers of small plastids. This cell has been stained with DAPI, a dye which binds to DNA and fluoresces blue-white. It reveals the large nucleus - bottom right. Fluorescence.
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Euglena oxyuris (you-glean-a ox-ee-your-is), is a moderate to large euglena, with a stiff pellicle that has well developed ridges. Flagella can be short. Although it can squirm it is not very actively metabolic. With large numbers of small plastids. This cell was illuminated using high energy ultraviolet light and the red autofluorescence then photographed. The fluorescence comes from the chlorophylls in the chloroplast and so we can use this to get a sense of the number and size of the plastids. Fluorescence.
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Euglena oxyuris (you-glean-a ox-ee-your-is), is a moderate to large euglena, with a stiff pellicle that has well developed ridges. Flagella can be short. Although it can squirm it is not very actively metabolic. With large numbers of small plastids. This cell was illuminated using high energy ultraviolet light and the green autofluorescence then photographed. Fluorescence.
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Euglena oxyuris (you-glean-a ox-ee-your-is), is a moderate to large euglena, with a stiff pellicle that has well developed ridges, and often - as we can see here - with a fold in the cell. Flagella can be short. Although it can squirm it is not very actively metabolic. With large numbers of small plastids. Large red eyespot near the anterior (right). Differential interference contrast.
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Euglena oxyuris, one of the larger (but not largest) euglenids, broad front end, and with a posterior spike. No emergent flagellum, moves by gliding across the substrate. With obvious red eye spot and large paramylon granules. Differential interference contrast.
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Euglena oxyuris, one of the larger (but not largest) euglenids, broad front end, and with a posterior spike. No emergent flagellum, moves by gliding across the substrate. With obvious red eye spot and large paramylon granules. This image is of the pellicle, showing the folded nature that is distinctive for euglenids. Differential interference contrast.
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One of the larger species in the genus. The cortical region of the cell is thick and thrown into fine folds. There are several large rod-like paramylon granules, ovoid nucleus, and dark red spot near the front of the cell. There is no emergent flagellum. Nomarski optics.
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