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Nature 389, 229-230 (18 September 1997) | doi:10.1038/38381

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Efficient fish not faint-hearted

Elizabeth Brainerd1

The blood circulation systems of certain air-breathing fishes and most reptiles appear to be primitive and inefficient. But there may well be good reason that they are designed the way they are, and the principles concerned could inform clinicians who treat heart disease.

  1. Elizabeth Brainerd is in the Biology Department, and the Organismic and Evolutionary Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, USA.
    e-mail: Email: brainerd@bio.umass.edu