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DISCUSSION

DISCUSSION viridans streptococci show scanty, often Comments on the methods granular growth in broth. When, how- The methods used to study the phys- ever, very faint growth can occur iological characteristics of streptococci surrounding the inoculum in such a medium, which does not allow general are old and used in many laboratories. Every centre usually has its own com- growth, it has been difficult to deter- bination of tests. Minor divergencies in mine the growth characteristics of the the methods and media taken together viridans streptococci in many cases. This with the general sensitivity and vari- is reflected also in the results of these tests where a considerable number of ability of streptococci readily lead to viridans group strains were recorded as different results, and make the com- parison between the results presented by positive. different authors difficult. Even the The use of litmus milk in the study most usual streptococci are often de- of the streptococci is very old. Strong scribed by doubtful and equivocal char- reducing action is typical of enterococci and lactic streptococci ; they reduce the acteristics (BROWN 1953). In the pres- dye before curdling the milk. In fact, ent work all strains were tested accord- http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Internal Medicine Wiley

DISCUSSION

Journal of Internal Medicine , Volume 186 (S501) – Dec 12, 1969

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Publisher
Wiley
Copyright
"Copyright © 1969 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
0954-6820
eISSN
1365-2796
DOI
10.1111/j.0954-6820.1969.tb12754.x
Publisher site
See Article on Publisher Site

Abstract

viridans streptococci show scanty, often Comments on the methods granular growth in broth. When, how- The methods used to study the phys- ever, very faint growth can occur iological characteristics of streptococci surrounding the inoculum in such a medium, which does not allow general are old and used in many laboratories. Every centre usually has its own com- growth, it has been difficult to deter- bination of tests. Minor divergencies in mine the growth characteristics of the the methods and media taken together viridans streptococci in many cases. This with the general sensitivity and vari- is reflected also in the results of these tests where a considerable number of ability of streptococci readily lead to viridans group strains were recorded as different results, and make the com- parison between the results presented by positive. different authors difficult. Even the The use of litmus milk in the study most usual streptococci are often de- of the streptococci is very old. Strong scribed by doubtful and equivocal char- reducing action is typical of enterococci and lactic streptococci ; they reduce the acteristics (BROWN 1953). In the pres- dye before curdling the milk. In fact, ent work all strains were tested accord-

Journal

Journal of Internal MedicineWiley

Published: Dec 12, 1969

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