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Matière vivante, Bactéries
Live specimens are used for a wide variety of studies including studying the physiological effects of drugs on a specimen’s heartbeat and temperature on metabolism, the locomotion of microscopic organisms, and studying plant respiration, photosynthesis, plosmolysis, and more. Algal cultures form colonies of cells that are extremely easy to visualize for better understanding of cell walls and plastids, and many live specimens reproduce rapidly for quick turnover between successive tests.
Applied Filters
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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 (non-muccoid) Culture
Used for culturing Dictyostelium discoideum (cellular slime mold).
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Ward's® Live Pseudomonas putida Culture
From soil and water rich in minerals. Organism of putrefaction.
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Ward's® Live Serratia liquefaciens Culture
Colorless, most widely dispersed of the Serratia 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 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 Klebsiella pneumoniae Culture - PATHOGEN
Noted for capsular swelling. Causes pneumonia and urinary tract infections.
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Ward's® Moraxella catarrhalis
Normal flora of respiratory tract. Beta-lactamase positive. Also known by the name Branhamella catarrhalis
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Ward's® Live Proteus mirabilis Culture - PATHOGEN
Isolated from sewage, human intestines, and urinary tract infections. Spreading colonies are seen on agar growth medium.
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Ward's® Live Salmonella enteritidis Culture - PATHOGEN
Frequent human isolate. Causes gastroenteritis.
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Ward's® Live Salmonella typhimurium, Ames Test Strain Culture - PATHOGEN
Ames test strain for detecting carcinogens. Causes infection in humans.
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Ward's® Live Serratia marcescens Cultures: Strain 933 and Strain WCF
Both of these strains of Serratia marcescens are colorless mutants when plated alone, but when grown together, they produce a red pigment.
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Ward's® Live Shigella flexneri Culture - PATHOGEN
From sewage and human intestine. Causes dysentery.
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Ward's® Live Shigella sonnei Culture - PATHOGEN
isolated from human intestine. Lactose positive and sucrose positive after a few days’ growth. Causes a mild form of dysentery.
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Ward's® Live Staphylococcus aureus, Beta (β) hemolytic - PATHOGEN
Beta hemolysis on blood. Causes wound infections and septicemia.
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Ward's® Live Staphylococcus saprophyticus Culture
Grows on dead tissues. Novobiocin resistant (S. epidermidis and S. aureus novobiocin sensitive).