Ultrastructural aspects of bubble formation in human fatal accidents after exposure to compressed air

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Abstract
Electron microscopic investigations were performed on samples of human tissue obtained from subjects following fatal decompression sickness, associated with hyperbaric air-therapy. Intra- and extracellular gas bubbles of varying size were identified throughout the entire body. Each bubble was covered by an osmiophilic non-homogeneous coat of cloudy and flocculent material, native to its specific locality. This envelope measured from 30 to 560 Angstroem-units in thickness. Association of this covering with an electrokinetic zonal activity, detected biophysically by Lee and Hairston (1971) is assumed. We consider this surface coat prevents nitrogen from being eliminated via the blood-lung-barrier.

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