Abstract
<b>Carney, S. A., Lawrence, J. C., and Ricketts, C. R. (1970).</b><i>Brit. J. industr. Med.,</i><b>27,</b> 72-76. <b>Effect of microwaves at X-band on guinea-pig skin in tissue culture. 3. Effect of pulsed microwaves on skin respiration and biochemistry.</b> Small pieces of guinea-pig skin were exposed to known power densities of pulsed microwaves at X-band (9·6 GHz). The pulse duration was 0·25 microsecond and the pulse repetition frequency 4 KHz. The peak power was thus 1,000 times the mean power. Otherwise conditions were closely comparable with those of previous experiments using continuous microwaves. After exposure the skin was maintained on a nutrient medium <i>in vitro</i>. The respiration of the skin and the uptake of <sup>35</sup>S-sulphate, <sup>32</sup>P-phosphate, and <sup>14</sup>C-L-proline into skin constituents were reduced by exposure. The reduction was very similar to that observed after exposure to the same mean power density of continuous microwaves. The effects are believed to be attributable to heating of the skin.
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