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Unstable Germicidal Pollutant in Rural Air


IN the microthread technique1 the viability of “airborne” microorganisms is studied by assaying their survival when held on ultrafine spider threads freely exposed to the air. The use of this technique as a sensitive detector of air pollution has been described before2.

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DRUETT, H., MAY, K. Unstable Germicidal Pollutant in Rural Air. Nature 220, 395–396 (1968).

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