411 REFERENCE · Wiktionary
Rhesus system
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Rhesus blood group system
Etymology
So named because the first identified antigen (RhD) was originally believed to be the same as one discovered in rhesus macaques.
Proper noun
en medicine A blood group system, the second most important after the ABO system, and important in human blood transfusion, whereby blood types are classified according to the presence ("positive") or absence ("negative") of potentially over 50 antigens, of which the most commonly referenced is RhD.
Related terms
en Rh RhD Rhesus factor rhesus monkey Rhesus negative Rhesus positive
See also
en blood type