A–Z Glossary

Hemolytic disease of the fetus and newborn

Hemolytic disease of the fetus and newborn occurs when maternal antibodies destroy fetal or newborn red blood cells, potentially causing anemia or jaundice.

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Blood type Rh factor and Rh incompatibility

Blood type Rh factor and Rh incompatibility

What is the Rh factor? The Rh factor, often referring specifically to the D antigen in the Rh blood group system, is a protein on red blood cells. A person whose red blood cells carry this protein is Rh-positive. A person whose red blood cells do not carry it is Rh-negative. Rh status is inherited […]