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"WardsSci000218"
Les spécimens vivants sont utilisés dans une grande variété d’études, notamment pour observer les effets physiologiques des médicaments sur le rythme cardiaque d’un organisme, l’influence de la température sur le métabolisme, la locomotion des organismes microscopiques, ainsi que la respiration des plantes, la photosynthèse, la plasmolyse et bien plus encore. Les cultures d’algues forment des colonies cellulaires très faciles à visualiser pour mieux comprendre les parois cellulaires et les plastes. De nombreux spécimens vivants se reproduisent rapidement, permettant un renouvellement rapide entre les tests successifs.
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Colpidium
Hay medium. Characterized by cilia; nearly all possess two types of nuclei.
Développer 2 article
Chilomonas
Two flagella; no chloroplasts. Food organism. Hay medium.
Characterized by flagella; lacks plastids.
Développer 2 article
Difflugia
Test cylindrical, covered with sand granules. Soil-water medium.
Characterized by pseudopods; with or without a shell (test).
Développer 1 article
Didinium
Predatory. Feeds on Paramecium caudatum. Hay medium.
Characterized by cilia; nearly all possess two types of nuclei.
Développer 2 article
Ward's® Live Arcella Culture
Usually found in freshwater and mosses, this organism has a hard umbrella shaped shell or "test", out of which finger-like pseudopodia project.
Développer 1 article
Ward's® Live Actinosphaerium Sp. Culture
With stiff 'arms' radiating in all directions, these microscopic organisms look like sea urchins
Développer 1 article
Dictyostelium discoideum, Demonstration Plate
Cellular slime mold. Demonstrates amoeboid state, pseudoplasmodial state, and fruiting body, or sorocarp. Found in woodland soil in decomposing vegetation where bacteria are abundant. Incubation temperature 25°C. Plate cultures grown with Enterobacteria as food source; freeze-dried cultures include food source.
Characterized by an amoeboid stage (lacking cell walls) and a fungus-like reproductive structure.
Développer 1 article
Ward's® Live Bursaria truncatella Culture
Very large ciliate. Feeds on colpidium. Hay medium.
Characterized by cilia; nearly all possess two types of nuclei.
Développer 1 article
Ward's® Live Blepharisma Culture
Pink to bright rose color.
Characterized by cilia; nearly all possess two types of nuclei.
Développer 2 article
Ward's® Live Chaos (Pelomyxa sp.) Culture
Members of the Pelomyxa genus look very much like Amoeba. Pelomyxa, however, have many nuclei, whereas Amoeba have only one.