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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 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 Klebsiella pneumoniae Culture - PATHOGEN
Noted for capsular swelling. Causes pneumonia and urinary tract infections.
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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 Pseudomonas aeruginosa culture (Pathogenic)
This organism can be isolated from many human urinary tract infections, as well as polluted water and sewage. It is commonly identified by its distinctive grape-like smell (trimethylamine) or because it can turn the agar light green due to production of a blue pigment (pyocyanin).
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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 Proteus vulgaris Culture - PATHOGEN
Isolated from human urinary tract and wound infections, this organism is identifiable by its characteristic putrefactive odor.
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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 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.