Every now and then a new paper comes along that gives hope that one day we'll make sense of the conflicting results that have become the hallmark of EMF research. A team of Finnish researchers from the University of Kuopio has published such a paper. It's in the June issue of the International Journal of Radiation Biology.
Anne Höytö, Jukka Juutilainen and Jonne Naarala have shown that the type of cells used in in vitro studies can determine whether they will respond to RF radiation. They ran the same experiment with primary cells —those taken directly from an organism— and with secondary cells —those that have been grown in a petri dish. They exposed both types of cells to two different RF signals, CW and modulated (GSM), at various intensities (SAR =1.5, 2.5 or 6 W/Kg) for various amounts of time (2, 8 or 24 hr), and then measured the activity of ODC (ornithine decarboxylase), an enzyme related to cellular growth and differentiation.