Literature DB >> 19868263

THE OPTIMUM HYDROGEN ION CONCENTRATION FOR THE GROWTH OF PNEUMOCOCCUS.

K G Dernby1, O T Avery.   

Abstract

1. The optimum hydrogen ion concentration for the growth of the various types of pneumococcus is a pH of about 7.8. 2. The limiting hydrogen ion concentrations for the growth of pneumococcus are a pH of 7.0 and a pH of 8.3. 3. Phosphates used in adjusting reactions of media retard growth if present in a concentration greater than 0.1 molecular. 4. Culture media for pneumococci should, therefore, have an initial reaction between a pH of 7.8 and 8.0 and a total salt concentration not exceeding 0.1 M.

Entities:  

Year:  1918        PMID： 19868263      PMCID： PMC2126280          DOI： 10.1084/jem.28.3.345

Source DB:  PubMed          Journal:  J Exp Med        ISSN： 0022-1007            Impact factor:   14.307


  2 in total

1.  Chart Presentation of Recent Work on Indicators.

Authors:  G S Walpole
Journal:  Biochem J       Date:  1911       Impact factor: 3.857

2.  A General Method of Estimating the Relative Turbidity or Opacity of Fluid Suspensions including Bacterial Emulsions.

Authors:  G Dreyer; A D Gardner
Journal:  Biochem J       Date:  1916-10       Impact factor: 3.857
  2 in total
  6 in total

1.  THE EFFECTS OF ACIDITY UPON THE GROWTH OF PNEUMOCOCCUS IN CULTURE MEDIA CONTAINING PROTEINS.

Authors:  W H Kelley
Journal:  J Exp Med       Date:  1938-04-30       Impact factor: 14.307

2.  STUDIES ON THE ENZYMES OF PNEUMOCOCCUS : I. PROTEOLYTIC ENZYMES.

Authors:  O T Avery; G E Cullen
Journal:  J Exp Med       Date:  1920-10-31       Impact factor: 14.307

3.  STUDIES ON THE MECHANISM OF IMMUNITY IN TUBERCULOSIS : THE MOBILIZATION OF MONONUCLEAR PHAGOCYTES IN NORMAL AND IMMUNIZED ANIMALS AND THEIR RELATIVE CAPACITIES FOR DIVISION AND PHAGOCYTOSIS.

Authors:  M B Lurie
Journal:  J Exp Med       Date:  1939-03-31       Impact factor: 14.307

4.  STUDIES ON BACTERIAL NUTRITION : IV. EFFECT OF PLANT TISSUE UPON GROWTH OF PNEUMOCOCCUS AND STREPTOCOCCUS.

Authors:  H J Morgan; O T Avery
Journal:  J Exp Med       Date:  1923-07-31       Impact factor: 14.307

5.  STUDIES ON PNEUMOCOCCUS GROWTH INHIBITION : I. THE PROTECTIVE ACTION OF GELATIN FOR PNEUMOCOCCI IN SUSPENSION.

Authors:  O H Robertson; R H Sia; S T Woo
Journal:  J Exp Med       Date:  1924-01-31       Impact factor: 14.307

6.  THE USE OF THE FINAL HYDROGEN ION CONCENTRATION IN DIFFERENTIATION OF STREPTOCOCCUS HAEMOLYTICUS OF HUMAN AND BOVINE TYPES.

Authors:  O T Avery; G E Cullen
Journal:  J Exp Med       Date:  1919-01-31       Impact factor: 14.307
  6 in total

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