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Introduction:Polyamines (PA) -putrescine, spermidine and spermine - are small organic highly charged cations which are present in all living cells and are important for nucleic acid metabolism. Urine excretion of PA was shown to reflect energy and nitrogen metabolism in intensive care patients.Hypothesis:1) postoperative splanchnic hypermetabolism may be reflected by increased PA urine excretion,...
We have studied ozone-induced reactions at biochemical and mRNA level in two birch clones that differ in their ozone-sensitivity. When exposed to a single 8 hour ozone pulse (150 ppb), first visible injuries appeared in 24 hours in the sensitive clone and lead eventually to partial tissue chlorosis and necrosis, while the insensitive clone was unaffected. Cell plasma membrane damage was measured by...
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