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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/10732
Title: Differentiation of Entamoeba: a new medium and optimal conditions for axenic encystation of E. invadens
Authors: S. Rengpien
G. B. Bailey
Mahidol University
Keywords: Agricultural and Biological Sciences;Immunology and Microbiology;Medicine
Issue Date: 1-Dec-1975
Citation: Journal of Parasitology. Vol.61, No.1 (1975), 24-30
Abstract: Nutritional and culturing requirements for efficient axenic encystation of E. invadens have been studied. A simple and reliable axenic encystation medium has been developed. It contains 0.5% tryptic digest of casein, 0.5% yeast extract, and 5% dialyzed serum in 5 mM potassium phosphate, pH 7.0. Mass encystation (avg. 70%) occurred within 30 hr when axenically growing trophozoites of E. invadens IP-1 were transferred to this medium before they entered stationary growth phase. Mass encystation of E. invadens PZ occurred similarly, but less reproducibly. Two E. histolytica strains did not encyst. Experiments established that differentiation did not depend upon changes in the external environment after amebae were transferred to encystation medium, and therefore, was inhibited by the shift from growth to encystation medium.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0016663283&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/10732
ISSN: 00223395
Appears in Collections:Scopus 1969-1990

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