the central portion of an aster, in which the centrosome lies.
the whole aster exclusive of the centrosome.
Origin of astrosphere
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A set of radiating fibrils extending outward from the centrosome and centrosphere of a dividing cell.aster attraction sphere
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.