Parasitology Research

, Volume 82, Issue 5, pp 439–444

Observations on the ultrastructure and viability of the cystic stage of Blastocystis hominis from human feces

  • K. T. Moe
  • M. Singh
  • J. Howe
  • L. C. Ho
  • S. W. Tan
  • G. C. Ng
  • X. Q. Chen
  • E. H. Yap
Original Paper

DOI: 10.1007/s004360050142

Cite this article as:
Moe, K.T., Singh, M., Howe, J. et al. Parasitol Res (1996) 82: 439. doi:10.1007/s004360050142

Abstract

This report describes the ultrastructure and viability of cysts of Blastocystis hominis from feces of infected patients. The cysts were round to ovoid, measured 2-5 μm in size, and contained a condensed cytoplasm that had vacuoles of varying sizes, four nuclei, and as many as six cristate mitochondria. The cell wall was rather electron-lucent. Surprisingly, chromatoid-like structures were found in the cytoplasm and nucleus of some of the cysts. These have not previously been reported in Blastocystis. The cysts can survive in water for up to 19 days at normal temperatures but are fragile at extreme temperatures and in common disinfectants.

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • K. T. Moe
    • 1
  • M. Singh
    • 1
  • J. Howe
    • 1
  • L. C. Ho
    • 1
  • S. W. Tan
    • 1
  • G. C. Ng
    • 1
  • X. Q. Chen
    • 1
  • E. H. Yap
    • 1
  1. 1.Department of Microbiology, Faculty of MedicineNational University of SingaporeSingaporeRepublic of Singapore