Rhesus-Inkompatibilität
Pollack moved to British Columbia, Canada, in 1954 to become a director of a blood bank and clinical laboratory. In 1956, he moved, this time to Princeton, New Jersey. He joined the staff of Ortho Pharmaceutical, where he began his research on his Rh disease vaccine. He would eventually become Ortho Pharmaceutical's vice president and director of research. Pollack obtained a doctorate in zoology at Rutgers University while researching Rh disease at Ortho.