Study type: Medical/biological study (experimental study)

In vitro microwave effects on human neutrophil precursor cells (CFU-C). med./bio.

Published in: Bioelectromagnetics 1981; 2 (3): 203-215

Aim of study (acc. to author)

To investigate the effects of 2450 MHz CW microwave exposure on the colony forming ability of human bone marrow cells in vitro.

Background/further details

Prior examination exposed cells were cultured for a period of 6-7 and 12-14 days respectively.



Exposure Parameters
Exposure 1: 2.45 GHz
Modulation type: CW
Exposure duration: continuous for 15 min
  • SAR: 2,000 mW/g maximum (62 - 2000 mW/g)
  • power density: 1,000 mW/cm² maximum (31, 62, 125, 250, 500, 1000 mW/cm²)

General information

the experiments were performed at different constant temperatures

Exposure 1

Main characteristics
Frequency 2.45 GHz
Exposure duration continuous for 15 min
Modulation type CW
Exposure setup
Exposure source
Chamber cells in glass microcapillary tubes inside an exposure chamber containing 0.9% saline solution continuously circulated by a constant temperature circulator
Sham exposure A sham exposure was conducted.
Measurand Value Type Method Mass Remarks
SAR 2,000 mW/g maximum calculated - 62 - 2000 mW/g
power density 1,000 mW/cm² maximum measured - 31, 62, 125, 250, 500, 1000 mW/cm²

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

At low power desities (up to 62 mW/cm2) no reduction in neutrophil colony number was observed. However, at higher power densities a reduction was observed. This reduction did not depend on temperature rise or cell cycle state.

Study character:

Study funded by

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