Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 82 studies (Cell Studies) from Glaser RF/Microwave Archive
Percival D. McCormack, Charles E. Swenberg · 1985
Scientists exposed DNA to both gamma radiation and electric fields simultaneously, finding that the electric field increased radiation damage by 38%. The electric fields appeared to change the DNA's shape, making it more vulnerable to radiation damage. This suggests that electric fields can amplify the harmful effects of ionizing radiation on genetic material.
Robert P. Liburdy, Alan Wyant · 1984
Scientists exposed human antibodies and mouse immune cells to radiofrequency radiation at levels below current safety limits. The RF fields altered how these immune system components behaved during laboratory separation processes, suggesting the radiation affected their physical properties. This demonstrates that RF radiation can influence immune system molecules at power levels considered safe by regulators.
C. F. Blackman et al. · 1980
Scientists exposed brain tissue to 147 MHz radio waves modulated at 16 Hz and found changes in calcium binding at a specific power level (0.83 mW/cm²). The effect only occurred within a narrow 'window' of field strength, and the width of this window changed depending on how many tissue samples were tested together.
Herman P. Schwan · 1980
This 1980 seminar by Herman P. Schwan examined the electrical properties of cells, focusing on how cells respond to electrical fields and currents. The research explored fundamental bioengineering principles that help scientists understand how electromagnetic fields interact with living tissue. This foundational work laid groundwork for understanding cellular responses to EMF exposure.
Charles A. Cain · 1980
Scientists developed a theoretical model showing how microwave and RF fields could affect nerve cell membranes without heating them up. The model suggests these electromagnetic fields can change how easily ions flow through cell membrane channels by altering the membrane's electrical potential. This provides a scientific framework for understanding how wireless radiation might influence nerve function at levels too low to cause thermal effects.
T. S. Tenforde · 1980
This 1980 letter by T.S. Tenforde evaluated on theoretical grounds the minimum electric field strength that would be required to produce the observed alteration in calcium ion binding at nerve cell surfaces if the field interaction occurred by thermal energy transfer. The calculation used the experimental conditions of Bawin et al. (1975), who exposed brain tissue to an amplitude-modulated 147 MHz radio-frequency field. The required field is at least 100 times greater than the field actually present in the exposed brain tissue, so the observed effect very likely proceeds by a mechanism other than thermal energy transfer.
S. S. Kronenberg, T. S. Tenforde · 1979
This 1979 technical report investigated how low-intensity 60 Hz magnetic fields affect cell growth in laboratory conditions. The research focused on the same frequency used by electrical power systems throughout North America. While specific findings aren't available, this represents early scientific investigation into whether power frequency magnetic fields can influence basic cellular processes.
P. Tuengler, F. Keilmann, L. Genzel · 1979
German researchers exposed enzyme solutions and hemoglobin to millimeter wave radiation (40-115 GHz) at 10 mW/cm² to test for biological effects. They found no detectable changes in enzyme activity or oxygen binding, even with precise frequency scanning. This suggests millimeter waves at these intensities don't directly interfere with basic protein functions.
O. P. Gandhi et al. · 1978
Researchers in 1978 developed an advanced computer-controlled system to measure how biological samples absorb millimeter wave radiation from 26.5 to 90 GHz. This technology allowed rapid frequency scanning that previously took hours with manual equipment, enabling more precise measurements of how living tissue interacts with high-frequency electromagnetic fields.
Leo E. Gerweck, Peggy Burlett · 1978
Researchers tested how heat and X-ray radiation affected the survival of three different cell types, including human brain tumor cells and Chinese hamster ovary cells. They found no correlation between how sensitive cells were to heat versus radiation damage. Cells that were highly sensitive to one type of damage weren't necessarily sensitive to the other.
O. BALZANO, O. GARAY, R.F. STEEL · 1977
This 1977 study measured how 6-watt portable radio transmitters heat simulated body tissue at different distances. Researchers found that VHF frequencies primarily heated surface fat layers, while UHF frequencies penetrated deeper into muscle tissue, with heating effects becoming negligible beyond 2 inches from the device.
Unknown authors · 1977
Researchers exposed human bone marrow cells to different types of electrical currents in laboratory culture dishes. They found that alternating current (AC) pulses had no effect on cell growth, but direct current (DC) at 10 microamps severely reduced cell growth and caused protein damage. This suggests that the type of electrical current matters significantly for biological effects.
Arthur W. Guy · 1977
NIOSH developed a specialized laboratory system in 1977 for exposing cell cultures to radiofrequency radiation while precisely controlling temperature and field strength. This technical report describes equipment designed to study RF effects on cells under controlled conditions. The system represented an early effort to standardize laboratory methods for investigating how electromagnetic fields affect living tissue.
P. E. Schoen, J. M. Schnur, J. P. Sheridan · 1977
Researchers developed a ruby fluorescence technique to accurately measure temperature in biological samples exposed to microwave radiation without interfering with the electromagnetic field. The method uses tiny ruby fragments that change their fluorescence properties with temperature, achieving precision within 0.21°C. Testing confirmed the technique works reliably even in the presence of 2.4 GHz microwave fields.
U. Zimmermann, G. Pilwat, F. Beckers, F. Riemann · 1976
Researchers applied electrical fields to giant algae cells and discovered that cell membranes undergo dramatic breakdown when exposed to approximately 1 volt of electrical potential. The membrane conductance increased dramatically at 0.85 volts, demonstrating that cell membranes have a specific electrical threshold where they lose their protective barrier function.
Richard H. Lovely, Thomas J. Sparks, A.W. Guy · 1976
This 1976 study developed methods for exposing primate lymphocytes (immune cells) to microwave radiation in laboratory conditions. Researchers established protocols and biological parameters needed for consistent testing. This was foundational work preparing for larger studies on how radiofrequency radiation affects immune system cells.
N.A.G. AHMED, J.H. CALDERWOOD, H. FRÖHLICH, C.W. SMITH · 1975
Researchers found that magnetic fields around 600 gauss caused lysozyme enzyme solutions to exhibit diamagnetic properties 10,000 times stronger than expected. The effect disappeared above 800 gauss, suggesting the enzyme was behaving like a superconductor at room temperature.
B. C. GOODWIN, SILVIA VIERU · 1975
This 1974 study by Goodwin examined how low-level electromagnetic fields affect enzyme-substrate interactions, specifically looking at electromagnetic perturbation of urea processing. The research explored what's known as the Comorosan effect, where weak electromagnetic fields can influence biological enzyme activity. This early work helped establish that even very low energy electromagnetic exposures can alter fundamental biochemical processes.
Mickey GH, Heller JH, Snyder E · 1975
This 1975 technical report by Mickey examined non-thermal biological hazards from radio frequency and microwave exposure using laboratory methods. The research focused on biological effects that occur without tissue heating, marking early recognition that microwave radiation could harm living systems through mechanisms beyond simple thermal damage. This represents foundational work in understanding RF health effects beyond the heating model still used in current safety standards.
R. Pethig · 1974
This 1974 study examined microwave Hall effect measurements to study electronic properties of biological materials. The research focused on developing and evaluating techniques for measuring how microwaves interact with biological systems at the electronic level. The work established foundational methods for understanding electromagnetic effects in living tissues.
A. PESKOFF, R. S. EISENBERG · 1973
This 1973 research examined how microelectrodes could be used to measure the electrical properties of living cells, including membrane potential and electrical responses. The study developed interpretations of these measurements using linear circuit theory to better understand cellular electrical behavior. This foundational work helped establish methods for studying how cells respond to electrical influences.
C. P. MAYERS, J. A. HABESHAW · 1973
Researchers exposed mouse immune cells to 2450 MHz microwave radiation (the same frequency used in microwave ovens) and found it significantly reduced the cells' ability to engulf and destroy foreign particles, even when temperature was carefully controlled. This immune suppression was reversible when the radiation stopped, suggesting microwaves can weaken immune function through non-thermal mechanisms.
W. A. G. VOSS, C. WARBY, R. RAJOTTE, M. J. ASHWOOD-SMITH · 1972
This 1972 study investigated using microwave energy to rapidly thaw frozen tissue culture cells for organ preservation research. The researchers explored microwave thawing as a potential method to improve cell survival rates after freezing, which is crucial for developing viable organ preservation techniques.
G. Ohlenschläger, I. Beyer, W. Gruno · 1972
German researchers in 1972 exposed cellular enzymes to electromagnetic waves ranging from 40 kHz to 2400 MHz at generator output voltages between 300 and 1000 mV and observed irreversible, exposure-time-independent decreases in enzyme activity as well as frequency-dependent decreases and increases. The study discussed direct hits in the active center of the enzyme molecule and allosteric effects as possible mechanisms.
H. Dugas et al. · 1972
This 1972 Biophysical Society conference research examined how electric fields affect the structural shape of staphylococcal protease, a bacterial enzyme. The study investigated whether electromagnetic fields could alter protein folding patterns, representing early laboratory research into how EMF exposure might change biological molecules at the cellular level.