| paraganglion | A small, roundish body containing chromaffin cells; a number of such bodies may be found retroperitoneally near the aorta and in organs such as the kidney, liver, heart, and gonads. Synonym: chromaffin body. (05 Mar 2000) |
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| paraganglionic cells | Cell's of the embryonic sympathetic nervous system that become chromaffin cell's. (05 Mar 2000) |