|Found 8 match(es) in the Image Captions |
|Paramecium bursaria - Paramecium bursaria as illustrated in Shen & Zhang (1990) Biomonitoring Techniques Using Freshwater Microbiota, China Architecture and Building Press.|
|Paramecium bursaria - Paramecium bursaria - this species of Paramecium is squatter than the more familiar ‘aurelia’ or ‘caudatum’-like species, and is also distinguished because it contains symbiotic green algae. The light structure to the left of centre is the opening to the mouth. Phase contrast micrograph.|
|Paramecium bursaria - Paramecium bursaria is one of many ciliates that lives in a symbiotic association with green algae. Algae live inside the cytoplasm of the cell. |
|Paramecium bursaria - Paramecium bursaria imaged with an array of contrast enhacement techniques. All cells point towards the center of the circle. The most visible components of the cell are the large macronucleus, an ajacent micronucleus, symbiotic algae, and the mouth. Bright field (Koehler illumination - (1 o'clock) shows the algae and major organelles, and these are made more strongly visible when the condesner iris is closed (2 o'clock). Phase contast tends to generate a lot of noise inside the cell (9 o'clock), whereas Nomarski (DIC or differential interference contrast - 10 o'clock) creates an image that is like a slice through the cell. Interference optics (3 o'clock)convert elements with different optical properties into different colours. Polarising optics (8 o'clock) only show refringent crystals weithin the cell. In dark ground (7 o'clock), the object is illuminated obliquely and only refracted light is visible. Illumination with ultraviolet light causes autofluorescence of the algae and the nucleus shows up because of the addition of DAPI (5 o'clock). The nucleus is also clearly visible in the cell that has been stained with Feulgen stain (for DNA - 12 o'clock). Cells dried in indian ink have ink collected in the depressions on the cell surface and the ink collects around the cell - this is referred to as negative staining (4 o'clock). Silver stains reveal the bases of the cilia (11 o'clock). The dowload file contains intermediate sized images of each technique. Images by D . J. Patterson.|
|Paramecium bursaria - in vivo portrait of Paramecium bursaria (EHRENBERG,1831) FOCKE, 1836. DIC.|
|Paramecium bursaria - Ventral infraciliature of Paramecium bursaria (EHRENBERG,1831) FOCKE, 1836. Stained by the silver carbonate technique (Foissner,W. Europ. J. Protistol.27:313-330;1991).Brightfield.|
|Paramecium bursaria - Ventral infraciliature of Paramecium bursaria (EHRENBERG,1831) FOCKE,1836. Stained by the silver carbonate technique (Foissner,W. Europ. J. Protistol.27:313-330;1991).Brightfield. |
|Paramecium bursaria - Dorsal view of Paramecium bursaria. On top left the metachronous beating of cilia is visible.
Sample from sphagnum pond situated in the northern alpine region of Austria near Salzburg. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.