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Matière vivante, Bactéries
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 spécimen, l’effet de la température sur le métabolisme, la locomotion des micro-organismes, ainsi que pour étudier la respiration des plantes, la photosynthèse, la plasmolyse et plus encore. Les cultures d’algues forment des colonies cellulaires très faciles à visualiser, ce qui permet de mieux comprendre les parois cellulaires et les plastes. De nombreux spécimens vivants se reproduisent rapidement, ce qui facilite un enchaînement rapide des tests successifs.
Applied Filters
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Ward's® Live Anabaena Culture
Anabaena is a genus of filamentous, un-branched Cyanobacteria consisting of bead-like cells and enlarged spores or heterocysts.
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Ward's® Live Gloeocapsa Culture
This colonial cyanobacteria is structured as several cells bound together in a gelatinous "mucilaginous sheath".
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Ward's® Live Halobacterium salinarium Culture
Red-pigmented halophile from evaporating salt ponds; requires 25% salt medium, lyses easily in plain water, releasing DNA.
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Ward's® Live Clostridium beijerinckii Culture
All microbial cultures undergo an extensive quality control program prior to releasing for sale, so they are guaranteed for purity as well as for species.
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Ward's® Live Corynebacterium xerosis Culture
All microbial cultures undergo an extensive quality control program prior to releasing for sale, so they are guaranteed for purity as well as for species.
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Ward's® Live Rhizobium leguminosarum Culture
Nitrogen fixation, produces nodules on legume roots. Bacteroids from nodules can be X, Y, and club shapes.
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Ward's® Live Streptomyces griseus Culture
Produces streptomycin. Branching mycelium and coenocytic hyphae.
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Ward's® Live Alcaligenes viscolactis Culture
The presence of A. viscolactis in milk is a common cause for sliminess or "ropiness".
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Ward's® Live Bacillus megaterium Culture
This organism is a common environmental isolate, and can be found in soil as well as in industrial settings.
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Ward's® Live Serratia liquefaciens Culture
Colorless, most widely dispersed of the Serratia species.