Practical Bacteriology; an Introduction to Bacteriological TechnicJ. Wiley & Sons; London, Chapman & Hall, 1928 - 235 pagine |
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Practical Bacteriology: An Introduction to Bacteriological Technic Fred Wilbur Tanner Visualizzazione estratti - 1933 |
Parole e frasi comuni
according to Outline acid adjustment agar plate agar slant alkali allow amount anaerobic apparatus aqueous autoclav Bacillus bacteria Bacteriology Bacterium broth culture carbohydrate cells cent chemical clean coli colonies color condenser containing cool cotton cover glass cubic centimeter culture tube decolorization determine dextrose dilution distilled water drop endospores examine eyepiece fermentation tube filamentous film Filter flagella flasks fuchsin gelatin gentian violet Gram stain Gram-negative Gram-positive growth heat hydrogen-ion illumination Incubate at 37 indicator inoculation iodine laboratory lactose lens loop low-power medium melted method Methyl methylene blue micrometer microorganisms microscope minutes mold needle nitrate nosepiece objective observations ocular organism oxygen peptone Petri dish pipette placed plug prepared procedure proteins pure culture reaction remove rhizoid sample secured slide sodium hydroxide Special Exercise spores sterile sterile Petri dishes sterile water surface suspension temperature test tube tion Wash WEEK First Meeting yeast yellow
Brani popolari
Pagina 189 - Echinulate — a growth along line of inoculation with toothed or pointed margins. Effuse — growth thin, veily, unusually spreading. Endospores — thick-walled spores formed within the bacterial cell, ie, typical bacterial spores like those of B. anthracis or B. subtilis.
Pagina 229 - Abbott, AC, The principles of bacteriology : a practical manual for students and physicians.
Pagina 189 - Optimum temperature — temperature at which growth is most rapid. Papillate — growth beset with small nipple-like processes. Pellicle — bacterial growth forming either a continuous or an interrupted sheet over the culture fluid. Peptonization — rendering curdled milk soluble by the action of peptonizing enzymes.
Pagina 188 - Diastatic action, conversion of starch into simpler carbohydrates, such as dextrins or sugars, by means of diatase.
Pagina 189 - Filaments, applied to morphology of bacteria, refers to thread-like forms, generally unsegmented; if segmented, to be distinguished from chains (qv) by the absence of constrictions between the segments. Filamentous, growth composed of long, irregularly placed or interwoven threads. Filiform, in stroke or stab cultures, a uniform growth along line of inoculation. Fimbriate, border fringed with slender processes, larger than filaments.
Pagina 188 - BRITTLE, growth dry, friable under the platinum needle. BULLATE, growth rising in convex prominences, like a blistered surface. BUTYROUS, growth of a butter-like consistency. CHAINS, Short chains, composed of 2 to 8 elements.
Pagina 70 - In order that the worker may have some idea of the degree of acidity corresponding to various pH values, it may be stated that a solution which has a pH value of 5.0 is 10 times as acid as one with a pH of 6.0. Analogously, a solution of pH 4.0 is 10 times as acid as one of pH 5.0. Thus pH 4.0 indicates an acidity 100 times as great as pH 6.0. A similar relationship holds on the alkaline side of the scale. That is, a solution which has a pH of 9.0 is 10 times as alkaline...
Pagina 189 - MAXIMUM TEMPERATURE, temperature above which growth does not take place. MEDIUM, several weeks. MEMBRANOUS, growth thin, coherent, like a membrane. MINIMUM TEMPERATURE, temperature below which growth does not take place. MYCELIOID, colonies having the radiately filamentous appearance of mold colonies. NAPIFORM, liquefaction with the form of a turnip.
Pagina 190 - SPORANGIA, cells containing endospores. SPREADING, growth extending much beyond the line of inoculation, ie, several millimeters or more. STRATIFORM, liquefying to the walls of the tube at the top and then proceeding downwards horizontally.
Pagina 194 - As each of the following characteristics is determined, Indicate In proper marginal square by means of figure, as designated below. In case any of these characteristics are doubtful or have not been determined.