Pregnancy/other obstetric conditions:Suppression of Rh immunization in non-sensitized Rho (D) negative women delivering an Rho positive baby, or when the baby's Rh type is unknown. Suppression of Rh immunization after spontaneous or induced abortions, threatened abortion associated with maternal bleeding, amniocentesis, chorionic villus sampling, ruptured tubal pregnancy, and significant abdominal trauma. TransfusionSuppression of Rh isoimmunization in Rho (D) antigen-negative patients transfused with Rho (D) antigen-positive RBCs or blood components containing Rho (D) antigen-positive RBCs.