Student Dictionary

One entry found for Rh factor.
Main Entry: Rh factor
Pronunciation: är-primarystressamacrch-
Function: noun
Etymology: from rhesus monkey, the animal in which the Rh factor was found
: a protein on the red blood cells of some people that is one of the substances used to classify human blood as to compatibility for transfusion and that when present in a fetus but not the mother causes a serious condition in which the mother produces antibodies that cross the placenta and attack the red blood cells of the fetus

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