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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 Streptomyces griseus Culture

Ward's® Live Streptomyces griseus Culture

Produces streptomycin. Branching mycelium and coenocytic hyphae. 

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Ward's® Live Alcaligenes viscolactis Culture

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 subtilis Culture

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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Ward's® Live Rhodospirillum rubrum Culture

Ward's® Live Rhodospirillum rubrum Culture

This species of Rhodospirillum is commonly isolated from stagnant water and mud. It is especially interesting because it produces a red pigment and is also capable of photosynthesis.

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Ward's® Live Bacillus cereus Culture

Ward's® Live Bacillus cereus Culture

This organism is often times isolated from food; in large amounts it can cause food poisoning

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Ward's® Live Clostridium rubrum Culture

Ward's® Live Clostridium rubrum Culture

Isolated from soil. Forms red pigment (best on high carbohydrate medium) and has oval eccentric spores. 

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Ward's® Live Escherichia coli culture

Ward's® Live Escherichia coli culture

This organism is a common inhabitant of intestinal flora, and can be a major cause of urinary tract infection.

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Ward's® Live Pseudomonas putida Culture

Ward's® Live Pseudomonas putida Culture

From soil and water rich in minerals. Organism of putrefaction.

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Ward's® Live Corynebacterium pseudodiphtheriticum Culture

Ward's® Live Corynebacterium pseudodiphtheriticum Culture

This organism is commonly isolated from human nasopharyngeal mucosa

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Ward's® Live Lactobacillus casei Culture

Ward's® Live Lactobacillus casei Culture

Isolated from milk and cheese products. Can be used to ferment milk. 

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