Constitutional Topic: The Preamble. The Constitutional Topics pages at the USConstitution.net site are presented to delve deeper into topics than can be provided on the Glossary Page or in the FAQ pages. This Topic Page concerns The Preamble. The first paragraph of the Constitution provides the context for the Constitution â the why of the document. The Constitution was written by several committees over the summer of 1787, but the committee most responsible for the final form we know today is the Committee of Stile and Arrangement.
1 Antibody screen is another blood test that can show if an Rh-negative woman has developed antibodies to Rh-positive blood. 2  An injection of Rh immunoglobulin (RhIg), a blood product that can prevent sensitization of an Rh-negative mother.
The Rhesus factor, also known as the Rh factor, is an antigen that exists on the surface of red blood cells in most people. People who have the Rhesus factor are considered to have a positive (+) blood type, such as A+ or B+.h Type and Pregnancy. A person's Rh type is generally most relevant with respect to pregnancies. During pregnancy, an Rh+ fetus developing in the womb of an Rh-woman runs the risk of developing Rhesus disease, also called Rh disease or hemolytic disease of the newborn.