|Distance between exposed object and exposure source||0.015 m|
|Setup||Animals were fitted with a leather harness holding a lexan container, holding a two way radio, in contact with frontal scalp. Two way radio in the container was held in such a way that the antenna remained at a distance of 1.5 cm from the frontal midline of the scalp.|
The studies of the integrity of blood-brain barrier and brain tissue elements (as demonstrated with sensitive neurohistological special stains and with even more sensitive histochemical preparations) failed to detect any evidence of injury to brain tissue in the exposed group or in the non-exposed control group. The authors conclude that repeated daily exposure at 452 MHz does not produce detectable brain injury in pigs. It is unlikely that similar usage of two-way portable radios in humans will produce any brain injury or blood-brain barrier disruption.