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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 Streptococcus gallolyticus Culture
Isolated from the alimentary tract of cows. Lancefield group D, gamma hemolysis. May be pathogenic in humans.
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Ward's® Live Sporosarcina ureae 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® Kocuria rosea
This organism is commonly isolated from soil or water, and produces a pink or rose colored pigment.
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Ward's® Live Lactobacillus casei Culture
Isolated from milk and cheese products. Can be used to ferment milk.
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Ward's® Live Staphylococcus saprophyticus Culture
Grows on dead tissues. Novobiocin resistant (S. epidermidis and S. aureus novobiocin sensitive).
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Ward's® Live Lactobacillus delbrueckii ss. bulgaricus Culture
Isolated from milk products; used in the manufacture of yogurt, buttermilk, and cheese.
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Ward's® Live Mycobacterium phlei Culture - PATHOGEN
This pathogenic organism is sometimes isolated from hay and grass.
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Ward's® Live Streptococcus agalactiae Culture - PATHOGEN
Isolated from milk and udders of cows. Lancefield group B, beta hemolysis. Causes infection of the female genital tract, maternal septicemia, neonatal infections. Camp test positive; resistant to bacitracin.
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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 Staphylococcus aureus, Beta (β) hemolytic - PATHOGEN
Beta hemolysis on blood. Causes wound infections and septicemia.