Rhogam: Rh0 immunoglobulin, also called anti-Rh or anti-D immunoglobulin is an injectable blood product used to protect an Rh-positive fetus from antibodies by its Rh-negative mother. The idea underlying Rhogam is if anti-Rh antibody is given soon after delivery, it blocks the sensitization of the mother and prevents Rh disease from occurring in the woman's next Rh-positive child. Rhogam was developed in the 1960s by Dr. Vincent J. Freda (1927-2003), professor of obstetrics and gynecology at Columbia University.