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The influence of environmental factors on the size of the cysts of Entamoeba invadens Rodhain, 1934

Published online by Cambridge University Press:  06 April 2009

Elspeth W. McConnachie
Elspeth W. McConnachie
Affiliation:
The Molteno Institute, University of Cambridge
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Extract

In dibacterial cultures of E. invadens the size of the cysts was significantly influenced by different species of concomitant bacteria, and by the composition of the media. These factors appear to influence cyst size as a result of their effect on the growth rate of the amoebae; a higher multiplication rate was associated with a decrease in the size of the cysts.

I wish to thank Dr A. Bishop for criticizing the manuscript, and Mr W. McConnachie, jun., for assistance with the statistical methods. The work has been financed by the Medical Research Council.

Type
Research Article
Information
Parasitology , Volume 44 , Issue 3-4 , November 1954 , pp. 342 - 348
Copyright
Copyright © Cambridge University Press 1954

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References

REFERENCES

Chang, S. L. (1946). Studies on Entamoeba histolytica. IV. The relation of oxidation-reduction potentials to the growth, encystation and excystation of Entamoeba histolytica in culture. Parasitology, 37, 101.CrossRefGoogle Scholar
Dobell, C. (1919). The Amoebae living in Man. London: John Bale, Sons, and Danielsson.Google Scholar
Dobell, C. & Jepps, M. W. (1917). On the three common intestinal entamoebae of man, and their differential diagnosis. Brit. Med. J. 1, 607.CrossRefGoogle ScholarPubMed
Dobell, C. & Jepps, M. W. (1918). A study of the diverse races of Entamoeba histolytica distinguishable from one another by the dimensions of their cysts. Parasitology, 10, 320.CrossRefGoogle Scholar
Dobell, C. & Laidlaw, P. P. (1926). On the cultivation of Entamoeba histolytica and some other entozoic amoebae. Parasitology, 18, 283.CrossRefGoogle Scholar
Fantham, H. B. & Porter, A. (1950). The endoparasites of certain South African snakes, together with some remarks on their structure and effects on their hosts. Proc. Zool. Soc. Lond. 120, 599.CrossRefGoogle Scholar
Geiman, Q. M. & Ratcliffe, H. L. (1936). Morphology and life-cycle of an amoeba producing amoebiasis in reptiles. Parasitology, 28, 208.CrossRefGoogle Scholar
Gnezdilov, V. (1934). Contribution à la biométrie et à la statistique des kystes d'Entamoeba histolytica et d'Entamoeba hartmanni. Rev. Microbiol., Saratov, 13, 137. (Abstracted by Hoare, C. A. (1935) in Trop. Dis. Bull. 32, 780.)Google Scholar
Hoare, C. A. (1940). On an Entamoeba occurring in English goats. Parasitology, 32, 226.CrossRefGoogle Scholar
Knowles, R. & Das, Gupta B. M. (1930). On two intestinal protozoa of an Indian turtle. Indian J. Med. Res. 18, 97.Google Scholar
Malins, A. Smith (1918). Measurements of and observations upon the cysts of Entamoeba histolytica and of Entamoeba coli. Ann. Trop. Med. Parasit. 12, 27.Google Scholar
Neal, R. A. (1950). An experimental study of Entamoeba muris (Grassi, 1879); its morphology, affinities and host-parasite relationship. Parasitology, 40, 343.CrossRefGoogle ScholarPubMed
Rodhain, J. (1934). Entamoeba invadens n.sp., parasite de serpents. C.R. Soc. Biol., Paris, 117, 1195.Google Scholar
Sapero, J. J., Hakansson, E. G. & Louttit, C. M. (1942). The occurrence of two significantly distinct races of Entamoeba histolytica. Amer. J. Trop. Med. 22, 191.CrossRefGoogle Scholar
Wenyon, C. M. & O'Connar, F. W. (1917). Human Intestinal Protozoa in the Near East. London: John Bale, Sons, and Danielsson.Google Scholar