VA Â» Office of Public and Intergovernmental Affairs Â» History of Veterans Day. World War I â known at the time as âThe Great Warâ - officially ended when the Treaty of Versailles was signed on June 28, 1919, in the Palace of Versailles outside the town of Versailles, France.
If your blood mixes with Rh-positive blood, your immune system will react to the Rh factor by making antibodies to destroy it. This immune system response is called Rh sensitization. Rh sensitization can occur during pregnancy if you are Rh-negative and pregnant with a developing baby (fetus) who has Rh-positive blood.
Overview, Causes, & Risk Factors. Rh incompatibility is a condition that occurs when the mother of a fetus or newborn has Rh-negative blood type and the fetus or newborn has Rh-positive blood. This incompatible blood reaction may cause problems in a newborn as well as life-threatening problems for future pregnancies.h incompatibility is a condition that occurs when the mother of a fetus or newborn has Rh-negative blood type and the fetus or newborn has Rh-positive blood.