Summary
In cultured chicken embryo fibroblasts treated with copper-(copper cation 10−3.5–10−5 m), nickel and cobalt salts an enhancement of the plating efficiency of Semliki Forest virus could be observed. This augmented plaque formation was most probably due to a higher adsorption rate of virions to the cell surface under the influence of the transition metal ions. The plating efficiency of West Nile virus in chicken-embryo fibroblasts and, to a lesser degree, of poliovirus type 1 and 2 in KB-cells was also enhanced by copper sulfate.
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Wyler, R., Wiesendanger, W. The enhancing effect of copper, nickel, and cobalt ions on plaque formation by Semliki Forest virus (SFV) in chicken embryo fibroblasts. Archives of Virology 47, 57–69 (1975). https://doi.org/10.1007/BF01315593
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DOI: https://doi.org/10.1007/BF01315593