Models for Excystation

  • Ernest A. Meyer
  • Frank W. SchaeferIII


Although the first recorded observation of Giardia trophozoites is generally attributed to Anton van Leeuwenhoek in 1681, the description of cysts of these organisms, and their relation to the flagellated forms, was only made some two centuries later, by Grassi (1879, 1881, 1888) and Perroncito (1887). The actual process of Giardia excystation has apparently only been seen and described in this century.


Giardia Cyst Cyst Preparation Cyst Suspension Giardia Trophozoite Waterborne Transmission 
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Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • Ernest A. Meyer
    • 1
  • Frank W. SchaeferIII
    • 2
  1. 1.Department of Microbiology and ImmunologyOregon Health Sciences UniversityPortlandUSA
  2. 2.Microbiology Branch, Toxicology and Microbiology Division, Health Effects Research LaboratoryUnited States Environmental Protection AgencyCincinnatiUSA

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