Ounce of Prevention is a weekly column which presents recommendations for preventative services derived from The United States Preventive Services Task Force (USPSTF).

If your blood has proteins, you're Rhesus, or Rh, positive. People with type O-negative blood are considered "universal donors" because their blood doesn't have any antigens or proteins ...

each classified as positive or negative based on the Rh factor. Blood type is usually determined during hospital visits, especially when a transfusion may be needed, such as in surgery or childbirth.

If blood of Rh-positive grandmothers could induce immunologic ... in relation to their levels of "complete" antibody. The same type of reaction could be produced in rats and rabbits.

positive or Rh negative, based on whether the blood contains the RhD antigen. While generally, you do not need to worry about your blood type, it can be a problem during pregnancy if you and the ...