Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Diagram of the RHD and RHCE genes. The ten RHD exons are shown as white boxes, and the RHCE as grey. A). RHD and RHCE genes responsible for the common D, C, c, E and e antigen polymorphisms. B). Altered RHD and C). Altered RHCE genes indicating the changes often found in African-Americans that complicate transfusion, especially for sickle cell patients.
