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Volume 5, Number 6—December 1999

Perspective

Emerging Infectious Diseases and Amphibian Population Declines

Peter Daszak*Comments to Author , Lee Berger†‡, Andrew A. Cunningham§, Alex D. Hyatt†, D. Earl Green¶, and Rick Speare‡
Author affiliations: *Institute of Ecology, University of Georgia, Athens, Georgia, USA; †Australian Animal Health Laboratory, Commonwealth Scientific Industrial Research Organization, Geelong, Victoria, Australia; ‡School of Public Health and Tropical Medicine, James Cook University, Townsville, Queensland, Australia; §Institute of Zoology, Zoological Society of London, London, United Kingdom; and ¶National Wildlife Health Center, U.S. Geological Survey, Madison, Wisconsin, USA

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Figure 4

Transmission electron micrographs of iridovirus cultured from the liver of a naturally diseased common frog (Rana temporaria) by using a fathead minnow epithelial cell line. 4a. Virus-infected cell. Large isocahedral viruses are conspicuous within the cytoplasm (arrows). Bar = 2 µm. 4b. Paracrystalline array of iridovirus. Bar = 200 µm.

Figure 4. Transmission electron micrographs of iridovirus cultured from the liver of a naturally diseased common frog (Rana temporaria) by using a fathead minnow epithelial cell line. 4a. Virus-infected cell. Large isocahedral viruses are conspicuous within the cytoplasm (arrows). Bar = 2 µm. 4b. Paracrystalline array of iridovirus. Bar = 200 µm.

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1Note that the relative number of mass death events decreases with increasing impact on population.

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