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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.
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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 Streptococcus pyogenes Culture - PATHOGEN
Lancefield group A, beta hemolysis. Sensitive to bacitracin. Causes strep throat, rheumatic fever, and scarlet fever.
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Ward's® Live Streptococcus equisimilis Culture - PATHOGEN
Lancefield group C, beta hemolysis. Causes strangles in horses. May be pathogenic in humans. Camp test negative; resistant to bacitracin, does not ferment lactose.
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Ward's® Live Geobacillus stearothermophilus Culture
This spore-forming, thermophilic organism is commonly used for germicidal and sporicidal testing due to its ability to withstand higher-than-normal temperatures.
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Ward's® Live Streptococcus pneumoniae Culture - PATHOGEN
No Lancefield group shown, alpha hemolysis. Bile solubility test positive, optochin sensitive. Causes pneumonia.
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Ward's® Live Bacillus licheniformis 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 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 Streptomyces griseus Culture
Produces streptomycin. Branching mycelium and coenocytic hyphae.
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Ward's® Live Bacillus subtilis Culture
This organism is commonly isolated in soil and produces antibiotics such as bacitracin, subtilisin, and mycobacillin.
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Brevibacillus brevis
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.