The Helmholtz coils were housed in a purpose-built incubator situated in an electrically shielded room away from any MF sources and maintained at 37 °C by a flow of warm air from a distant source (2 m).
Setup
Culture tubes containing 5 ml of medium were placed within the pair of Helmholtz coils. Each coil was 180 mm in diameter and made of 100 turns of enamelled 0.7 mm diameter copper wire.
Control tubes were similarly cultured over a separate 72 h incubation period, but received no exposure to MFs. An independent person set the MF parameters that were unknown to the researcher.
Palmerston North Medical Research Foundation, New Zealand
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