Corrections and Clarifications


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Science  27 Apr 1990:
Vol. 248, Issue 4954, pp. 424
DOI: 10.1126/science.424-b


In the Research News article by Robert Pool, "Heart like a wheel" (16 Mar., p. 1294), the Purkinje fibers were incorrectly identified as a system of nerves. They are instead modified heart muscle cells that are specialized for high-speed conduction.

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