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rhesus monkey

noun
1.
a macaque monkey, Macaca mulatta, of S Asia: used extensively in medical research
Word Origin
C19: New Latin, arbitrarily from Greek RhesosRhesus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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rhesus monkey in Science
rhesus monkey
  (rē'səs)   
A small, yellowish-brown monkey (Macaca mulatta) of India, widely used in biological and medical research. The Rh (Rhesus) factor was first discovered in rhesus monkeys.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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9
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