The Mycology of the Mouth: A Text-book of Oral BacteriaLongmans, Green, 1903 - 241 страници |
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Страница 19
... tested is maintained at a temperature of 80 ° C. for half an hour . At the end of the time the tube is replaced in the incubator for twenty - four hours . If spores are present they resist the action of the heat and develop rapidly when ...
... tested is maintained at a temperature of 80 ° C. for half an hour . At the end of the time the tube is replaced in the incubator for twenty - four hours . If spores are present they resist the action of the heat and develop rapidly when ...
Страница 38
... tested , which is growing artificially and not in its usual habitat . The use of spores and their death as determined by absence of germination is more reliable ; the spores to be tested are dried upon sterile silk threads and immersed ...
... tested , which is growing artificially and not in its usual habitat . The use of spores and their death as determined by absence of germination is more reliable ; the spores to be tested are dried upon sterile silk threads and immersed ...
Страница 67
... tested in various solvents , and , if possible , the spectrum noted . In stab cultures several other points are generally noted — the special form in which liquefaction of gelatin occurs , the formation of gas and the presence of growth ...
... tested in various solvents , and , if possible , the spectrum noted . In stab cultures several other points are generally noted — the special form in which liquefaction of gelatin occurs , the formation of gas and the presence of growth ...
Страница 68
... tested for with Fehling in the ordinary way . Alkali albumin in broth and ordinary nutrient broth are used to obtain the toxins of certain bacteria , such as diphtheria . The organisms are grown for seven days at 37 ° C. , and then ...
... tested for with Fehling in the ordinary way . Alkali albumin in broth and ordinary nutrient broth are used to obtain the toxins of certain bacteria , such as diphtheria . The organisms are grown for seven days at 37 ° C. , and then ...
Страница 74
... tested , or subsequently within certain time limits which differ for the different organisms used . For instance , an animal A is injected with increasing doses of diphtheria toxine until it becomes immune . The animal is now bled under ...
... tested , or subsequently within certain time limits which differ for the different organisms used . For instance , an animal A is injected with increasing doses of diphtheria toxine until it becomes immune . The animal is now bled under ...
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abscesses absolute alcohol acid reaction Agar Streak alkaline animals appear aureus bacillus bacteria Bacteriology Biological Characters.-An äerobic blood serum bodies broth broth culture buccalis capsule carbohydrate carbol cells cent cocci coccus colonies colour Crown 8vo cultivation dental caries dentine diplococci disease enamel endospores enzymes facultative anäerobic fermentation filaments filtered flagella flocculi fluid forty-eight hours gelatin Gelatin Plates Gelatin Stab Gelatin Streak gentian violet Glucose glycerine gonidia Gram's method granular growth guinea-pigs Hospital Illustrations immunity injection inoculation irregular large number layer Leptothrix liquefaction liquefied gelatin Litmus Milk marked medium mesentericus methylene blue microscope Miller minute motile observed obtained occurs ordinary aniline dyes organisms pathogenic peptone pigment pneumococcus Potato precipitate present produced pure culture pyogenes pyorrhoea saliva solution species spirilla Spore formation staphylococcus staphylococcus aureus sterile streptococcus Streptothrix surface teeth temperature threads tion tissues toxine tube tubercle twenty-four hours various virulence washed
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