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Bacteria - Living Material
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.
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Ward's® Live GFP producing E. coli Culture
Eschericia coli culture that produces GFP, visible in the presence of UV light.
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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 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 Escherichia coli Conjugation Strains
Two strains of Escherichia coli (donor and host) with complementary sensitivities to Ampicillin and Streptomycin. Watch them trade traits via conjugation.
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Ward's® Live Neisseria flava Culture
Isolated from human nasopharynx. Presumably not related to N. sicca; some relation to N. gonorrhoeae. Often agglutinates in saline.
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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 Serratia marcescens D1 Culture
This organism is commonly isolated from soil, and depending upon the temperature of its environment, can produce a distinctive red pigment.
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Ward's® Live Streptococcus viridians Culture - PATHOGEN
Isolated from human saliva, sputum, and intestine. No Lancefield group shown, alpha hemolysis.
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Ward's® Live Vibrio fischeri Culture
Found in seawater and marine animals. Young cultures luminescent.
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Ward's® Live Staphylococcus epidermidis Culture
This organism is normal flora of human skin.
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Ward's® Live Streptococcus salivarius Culture
Normal flora of the mouth and throat. Lancefield group K, gamma hemolysis.
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Ward's® Live Streptomyces albus Culture
Isolated from straw, can also be found in the soil, and acts as a decomposer. Slight anti-bacterial activity. With coenocytic hyphae
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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 E. coli cultures for Coliphage Use
A collection of some of the strains of Escherichia coli needed to grow various coliphages (available separately).
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Ward's® Live Salmonella enteritidis Culture - PATHOGEN
Frequent human isolate. Causes gastroenteritis.
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Ward's® Live Shigella flexneri Culture - PATHOGEN
From sewage and human intestine. Causes dysentery.