Rhogamis anti D (passive immunity) that is given to RhD-mothers and will destroy any RhD+ fetal cells that cross placenta which prevents maternal antibody formation. It is given at 28 weeks and again at delivery to prevent fetus hemolytic disease.
fetal hemolytic disease =
•If mother is RhD –with an RhD + fetus, fetal cells may cross the placenta.
•Mother makes anti-RhD, IgGthat crosses placenta and lyses baby cellsAnti