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Wistar rats were exposed to 900 MHz in a single 4 hour exposure at 0.3 W/kg (GSM), 1.5 W/kg (GSM), or 7.5 W/kg (CW) (values given as brain average SAR). No effect was observed as measured by albumin immuno-histo chemistry at 0.3 and 1.5 W/kg (GSM). Blood brain barrier permeability was observed at 7.5 W/kg in a pattern consistent with heat stress (albumin leakage concentrated in areas of the limbic cortex, hypothalamic nuclei, cerebellum) |