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blood serum

noun
1.
serum (def 1).
Origin
1905-1910
1905-10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for blood sera

blood serum

noun
1.
blood plasma from which the clotting factors have been removed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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blood sera in Science
blood serum  
Blood plasma from which the protein fibrinogen, which causes clotting of the blood, has been removed.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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