Study type: Medical/biological study (experimental study)

Studies on acute in vivo exposure of rats to 2450-MHz microwave radiation. med./bio.

Published in: Radiat Res 1981; 86 (3): 580-588

Aim of study (acc. to author)

To investigate the effects of an in vivo whole-body microwave exposure on rats concerning several aspects of histamine secretion. After exposure blood pressure and heart rates as a response to compound 48/80 were investigated on pentobarbital anesthetized animals.

Background/further details

Peritoneal mast cells were extracted from decapitated animals and were used for further in vitro investigations.



Exposure Parameters
Exposure 1: 2.45 GHz
Modulation type: CW
Exposure duration: 8 h
  • SAR: 2.2 mW/g mean (cf. remarks) (1,8-2,2 mW/g, whole body 10mW/cm²)
  • SAR: 440 µW/g mean (cf. remarks) (0.36 to 0.44 mW/g; whole body, 2mW/cm²)
  • power density: 100 W/m² (2 and 10 mW/cm²)
  • SAR: 1.8 mW/g minimum (cf. remarks) (whole body)
  • SAR: 360 µW/g mean (cf. remarks) (whole body)

Exposure 1

Main characteristics
Frequency 2.45 GHz
Exposure duration 8 h
Additional info plane wave field
Modulation type CW
Exposure setup
Exposure source
Distance between exposed object and exposure source 1.55 m
Chamber environmental chamber 2.5 x 3.0 x 2.5 m lined with microwave absorber (- 45dB at 2,45GHz), 2,5cm thick styrofoam cages 10x20x13cm
Setup long axis parallel EF, 2,5cm above absorber on the floor of the chamber
Measurand Value Type Method Mass Remarks
SAR 2.2 mW/g mean estimated cf. remarks 1,8-2,2 mW/g, whole body 10mW/cm²
SAR 440 µW/g mean estimated cf. remarks 0.36 to 0.44 mW/g; whole body, 2mW/cm²
power density 100 W/m² - cf. remarks - 2 and 10 mW/cm²
SAR 1.8 mW/g minimum cf. remarks cf. remarks whole body
SAR 360 µW/g mean cf. remarks cf. remarks whole body

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Under the used microwave irradiation conditions the histamine-secreting cells in rat were not affected.

Study character:

Study funded by

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