This document analyzes blood typing results from four patients: Mrs. Smith, Mr. Jones, Mr. Green, and Ms. Brown. Table 1 shows their results when tested with anti-A, anti-B, and anti-Rh serum. Ms. Brown's results showed no agglutination with any of the serums, indicating her blood type is O- and she can only receive O- blood in a transfusion. The document also discusses determining blood types, defining erythroblastosis fetalis as severe anemia in newborn babies caused when a mother's antibodies attack her Rh+ baby's red blood cells, and the importance of taking multiple blood samples to get accurate results for diagnosis and treatment.