A Text-Book of Bacteriology; a Practical Treatise for Students And Practitioners of Medicine
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In our eReader you can find the full English version of the book. Read A Text-Book of Bacteriology; a Practical Treatise for Students And Practitioners of Medicine Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Text-Book of Bacteriology; a Practical Treatise for Students And Practitioners of Medicine
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This classification, however, is not scientifically tenable because of the considerable dependence of chain formation upon reaction, consistency, and nutritive qualities of the media employed for cultivation, and upon the influence of animal fluids if the microorganisms are taken direct from lesions. Schottmiiller,* who has made a careful study of streptococci, in 1903 proposed a classi- fication based both upon morphology and the appearance of cultures upon human blood agar. By this method he ...divided streptococci into two main groups as follows: I. Streptococcus longus seu erysipelatos, consisting of the most virulent varieties, having a tendency to form long chains, and regularly producing hemolysis upon blood media. II.
Streptococcus mitior seu viridans, including less virulent strains, with usually shorter chain-formation, and producing green, non-hemolyzing colonies upon blood media. These are the streptococci which he usually obtained from milder or more chronic lesions. A third group which he adds, Streptococcus mucosus, will receive special considera- tion in a separate section, and is probably more closely related to the pneumococci than to the streptococcus groups.
What to read after A Text-Book of Bacteriology; a Practical Treatise for Students And Practitioners of Medicine?
You can find similar books in the "Read Also" column, or choose other free books by Philip Hanson Hiss to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This classification, however, is not scientifically tenable because of the considerable dependence of chain formation upon reaction, consistency, and nutritive qualities of the media employed for cultivation, and upon the influence of animal fluids if the microorganisms are taken direct from lesions. Schottmiiller,* who has made a careful study of streptococci, in 1903 proposed a classi- fication based both upon morphology and the appearance of cultures upon human blood agar. By this method he ...divided streptococci into two main groups as follows: I. Streptococcus longus seu erysipelatos, consisting of the most virulent varieties, having a tendency to form long chains, and regularly producing hemolysis upon blood media. II.
Streptococcus mitior seu viridans, including less virulent strains, with usually shorter chain-formation, and producing green, non-hemolyzing colonies upon blood media. These are the streptococci which he usually obtained from milder or more chronic lesions. A third group which he adds, Streptococcus mucosus, will receive special considera- tion in a separate section, and is probably more closely related to the pneumococci than to the streptococcus groups.
What to read after A Text-Book of Bacteriology; a Practical Treatise for Students And Practitioners of Medicine?
You can find similar books in the "Read Also" column, or choose other free books by Philip Hanson Hiss to read onlineMoreLess
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