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MICROWAVES INDUCE AN INCREASE IN THE FREQUENCY OF COMPLEMENT RECEPTOR-BEARING LYMPHOID SPLEEN CELLS IN MICE

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WIESLAW WIKTOR-JEDRZEJCZAK, AFTAB AHMED, KENNETH W. SELL, PRZEMYSLAW CZERSKI, WILLIAM M. LEACH · 1977

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Single 30-minute exposure to 2450 MHz microwaves significantly altered immune cell populations in mouse spleens.

Plain English Summary

Summary written for general audiences

Researchers exposed mice to microwave radiation at 2450 MHz (the same frequency used in microwave ovens and some WiFi) for 30 minutes and found significant changes in immune system cells in the spleen. A single exposure increased complement-receptor positive immune cells, while repeated exposures also increased antibody-producing cells, suggesting the immune system was responding to the radiation exposure.

Why This Matters

This 1977 study provides early evidence that microwave radiation can trigger measurable immune system responses in mammals. The frequency tested (2450 MHz) is particularly relevant today because it's used in microwave ovens, older WiFi systems, and some Bluetooth devices. The power levels used (12-15 mW/g) were substantial but not unreasonable for research purposes. What's significant is that even a single 30-minute exposure produced detectable changes in immune cell populations, with repeated exposures amplifying these effects. The researchers found increases in both complement-receptor positive cells and antibody-producing cells, suggesting the immune system was mounting a response to what it perceived as a threat. While this doesn't prove harm, it demonstrates that microwave radiation can influence immune function at the cellular level, raising questions about chronic low-level exposures from our wireless devices.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
WIESLAW WIKTOR-JEDRZEJCZAK, AFTAB AHMED, KENNETH W. SELL, PRZEMYSLAW CZERSKI, WILLIAM M. LEACH (1977). MICROWAVES INDUCE AN INCREASE IN THE FREQUENCY OF COMPLEMENT RECEPTOR-BEARING LYMPHOID SPLEEN CELLS IN MICE.
Show BibTeX
@article{microwaves_induce_an_increase_in_the_frequency_of_complement_receptor_bearing_ly_g5690,
  author = {WIESLAW WIKTOR-JEDRZEJCZAK and AFTAB AHMED and KENNETH W. SELL and PRZEMYSLAW CZERSKI and WILLIAM M. LEACH},
  title = {MICROWAVES INDUCE AN INCREASE IN THE FREQUENCY OF COMPLEMENT RECEPTOR-BEARING LYMPHOID SPLEEN CELLS IN MICE},
  year = {1977},
  
  
}

Quick Questions About This Study

Yes, this study found that 2450 MHz microwave exposure significantly increased complement-receptor positive immune cells in mouse spleens after just 30 minutes, with repeated exposures also increasing antibody-producing cells.
The study showed that a single 30-minute exposure to 2450 MHz radiation (microwave oven frequency) was sufficient to produce significant changes in immune cell populations in the spleen.
Researchers used 12-15 milliwatts per gram of body weight at 2450 MHz frequency. This power level produced measurable increases in specific types of immune cells in the spleen.
Yes, three repeated exposures enhanced the immune response beyond single exposure, additionally increasing antibody-producing cells (Ig+ cells) along with complement-receptor positive cells in the spleen.
The radiation didn't kill cells or change total spleen cell numbers, but it significantly increased the proportion of specific immune cell types, suggesting activation rather than destruction.