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Aplasia (from Greek a (not, no); plasis (molding) is defined in general as "defective development or congenital absence of an organ or tissue."[1][2] In the field of hematology, the term refers to "incomplete, retarded, or defective development, or cessation of the usual regenerative process."[1][2]


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  1. ^ a b Stedman's medical dictionary. Baltimore: Williams and Wilkins. 1990. p. 106. ISBN 0-683-07916-6. 
  2. ^ a b "Stedman's > aplasia". Drugs.com. Retrieved 17 February 2010.