Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-09T08:12:57.014Z Has data issue: false hasContentIssue false
  • English
  • Français

The Reproduction of Aerobic Bacteria

Published online by Cambridge University Press:  15 May 2009

Edward C. Hort
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Although true meningococci are represented in serum 1, as shown by the high agglutination figure reached with serum 1 in the case of subculture 8, it appears that the antigenic value of strain 1, as represented in serum 1, finds its chief expression in “giant” forms, the morphological equivalent of films 3, 14, 17, 23, 31 A, from the subcultures which give the highest readings with serum 1 (except 8), being mainly that of “giant” forms in various stages of development. As I showed in 1916 “giant” forms may be either large, small or intermediate in size, and can at once be distinguished from true meningococci on the warm-stage by the fact that they often multiply by unequal binary fission, and by the further fact that they often undergo in addition endo-chromatinolysis, giving rise directly to meningococci which then divide in the ordinary vegetative manner. These fertile “giant” forms are readily distinguishable form forms undergoing genuine involutionary changes, both by the sterility of the latter when observed on the warm stage and by their feebly-staining properties.

Type
Research Article
Information
Journal of Hygiene , Volume 18 , Issue 4 , February 1920 , pp. 369 - 408
Copyright
Copyright © Cambridge University Press 1920

References

REFERENCES

Abbott, and Gildersleeve, (1904). On the brancing occasionally exhibited by B. diphtheriae. Centralbl. f. Bakteriol. xxxv. 273.Google Scholar
Fischer, A. (1900). Zeitschr. f. Hyg. xxxv. 58.Google Scholar
Horrocks, W. (iii. 1911). On the viability and possible variation of the B. typhosus. Journ. Roy. Army Med. Corps, 225.Google Scholar
Hort, E.C. (xi. 1916). The life-histories of bacteria. Journ. Roy. Microsc. Soc.Google Scholar
Hort, E.C. (iv. 1917). The meningococcus of Weichselbaum. Journ. Roy. Microsc. Soc.Google ScholarPubMed
Hort, E.C. (1917). Morphological studies in the life-histories of bacteria. Proc. Roy. Soc. B. lxxxiii. 468.Google Scholar
Lehmann, and Neumann, . (1896). Atlas und Grundriss der Bakteriologie.Google Scholar
Löhnis, and Smith, (31. vii. 1916). Life cycles of the bacteria. Journ. of Agricult. Research, 675.Google Scholar
Migula, (1900). System der Bakteriologie, i. 727.Google Scholar
Vedder, and Duval, (1901). The etiology of acute dysentery in the United States. Journ. Exper. Med. vi. 198.Google Scholar
Walker, and Murray, (vii. 1904). The effect of certain dyes upon the cultural characters of the B. typhosus and some other micro-organisms. Brit. Med. Journ. ii. 17.Google Scholar