Cranfield CG, Dawe A, Karloukovski V, Dunin-Borkowski RE, et al. (2004)

The authors had previously reported that heat-shock proteins were produced by C. elegans as a result of exposure to electromagnetic fields (EMFs). It had been suggested by others that the presence of magnetite, a ferrimagnetic iron oxide, might explain potential mobile phone bioeffects, by resulting in the local absorption of energy within the organism that is many times larger than the thermal background energy at body temperature. The present study was aimed at establishing whether magnetite is present in C. elegans.

The authors were able to demonstrate by the use of magnetometry and transmission electron microscopy that there was "compelling evidence" that C. elegans does in fact contain magnetite. They suggest that the presence of magnetite may provide a physically plausible explanation for the heat-shock protein responses seen in their earlier experiments.

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