Summary
Labelled free choline injected into the peritoneum failed to enter the brain but preferentially entered the liver. Subsequently labelled phospholipid was found in the plasma with a concurrent increase in the brain. This labelled plasma injected by cardiac puncture caused a rapid incorporation of the choline labelled phospholipid into the brain.
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Mann, S.P., Bennett, R.C. The fate of choline in the circulating plasma of the rat. Experientia 35, 211–212 (1979). https://doi.org/10.1007/BF01920622
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DOI: https://doi.org/10.1007/BF01920622