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Home > News > Nano World: Nanotube toxicity exams differ

June 2nd, 2006

Nano World: Nanotube toxicity exams differ

Charles Q. Choi: How toxic carbon nanotubes are on cells apparently depends on what lab tests are used to examine them, experts told UPI's Nano World. Toxicologists at the Karlsruhe Research Centre in Germany examined the impact of single-walled carbon nanotubes on human lung cells in vitro. One test used a water insoluble salt known as MTT to investigate nanotube impact on the function of mitochondria, the powerhouses of the cell. It found a toxicity of roughly 50 percent. However, a similar test measuring mitochondrial function using a water soluble salt known as WST showed no toxicity.


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