Randomized trial observes lung damage in rats euthanized with carbon dioxide versus pentobarbitone sodium, highlighting differences in injury severity.
Perivascular oedema was observed in the lungs of all rats subjected to carbon dioxide euthanasia. There was also an increased incidence of extravasation of blood compared to that seen in the lungs of rats killed by pentobarbitone sodium.
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Fawell et al. (1972) studied this question.
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