Abstract
IT is normally tacitly assumed that potassium contained in haemocytes contributes insignificantly to whole blood measurements of this ion in insects1–3; van Asperen and van Esch4, however, explicitly state this to be the case. Tobias5 seems to be the only worker who has investigated the problem: he measured potassium in both whole blood and in serum, finding a 40 per cent difference. Some scepticism of this result has been expressed4,6 but the problem has not been re-investigated.
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References
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BRADY, J. Haemocytes and the Measurement of Potassium in Insect Blood. Nature 215, 96–97 (1967). https://doi.org/10.1038/215096a0
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DOI: https://doi.org/10.1038/215096a0
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