The term "rh antigens" refers to a group of antigens that are present on the surface of red blood cells. These antigens play a crucial role in determining an individual's blood type. There are several synonyms for the term "rh antigens", including "rhesus factor", "Rh factor", and "D antigen". These synonyms are often used interchangeably to refer to the same group of antigens. In some cases, the term "Rh positive" is used to describe individuals who have these antigens present on their red blood cells, while "Rh negative" refers to those who do not. Understanding synonyms for "rh antigens" is important in the fields of medicine and blood donation, where accurate terminology is essential for effective communication and treatment.