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We investigated whether exposure to the 915 MHz radiofrequency identification (RFID) signal affected circulating blood cells in rats. Sprague–Dawley rats were exposed to RFID at a whole‐body specific absorption rate of 2 W/kg for 8 h per day, 5 days per week, for 2 weeks. Complete blood counts were performed after RFID exposure, and the CD4+/CD8+ ratio was determined by flow cytometry. The number...
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