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an antibody to an Rh antigen on Rh+ erythrocytes that causes these cells to agglutinate. Appears in Rh- persons after exposure to Rh+ erythrocytes, as when an Rh- mother is pregnant with an Rh+ fetus. See also Rh factor.
anti-Rh agglutinin(1) Anti-Rh antibody.
(2) A nonspecific term for any anti-Rh system antibody, most often referring to anti-RhD and anti-RhDu antibodies.
An antibody produced by people with Rh-negative blood who are exposed to blood containing the Rh antigen. This antibody develops in Rh-negative people who receive Rh-positive blood and in Rh-negative women carrying an Rh-positive fetus. The antibody may cause hemolytic disease of the newborn in subsequent Rh-positive pregnancies.
See also: agglutinin