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Philadelphia chromosome

[ fĭl′ə-dĕlfē-ə ]
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n.

An abnormal minute chromosome found in white blood cells in many cases of chronic myelocytic leukemia.

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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