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no connection between lymphoma and radio waves according to German laboratory studies

In 1997, a study carried out by Repacholi et al. concluded that laboratory mice, genetically modified to develop lymphoma (a type of cancer), become sick in greater numbers when exposed to radio waves similar to those emitted by the GSM system. The study has been criticised due to a number of irregularities and has been replicated in an independent laboratory. The results of that replication were published in 2002 by Utteridge et al., with no effects due to radio waves being identified. In both studies, the mice were exposed to radio waves for one hour per day.

In 2005, Sommer et al. exposed AKR/J-type genetically modified mice (predisposed to developing lymphoma) to radio waves similar to those emitted by the GSM system for 24 hours a day. No increased risk of disease has been registered in mice exposed to the radio waves, compared to those not exposed. This study was followed by another, published in 2007, where the same team investigated whether radio waves emitted by the UMTS (3G) system affect the development of lymphoma in the same type of laboratory mice. The result was also negative.