Antigens: You lack either the a or b antigens on your blood cells but do have rh positive antigen. It means you can donate blood to anyone who is rh positive irrespective of their blood type.
Washington, D.C. , formally the District of Columbia and commonly referred to as  Washington ,  the District , or simply  D.C. , is the capital of the United States.ommuters from the surrounding Maryland and Virginia suburbs raise the city's population to more than one million during the workweek. The Washington metropolitan area, of which the District is a part, has a population of 5.8 million, the seventh-largest metropolitan statistical area in the country.
Monuments and memorials, eclectic neighborhoods, true local flavor â Washington, DC is a place unlike any other. Itâs your home away from home with free museums and Americaâs front yard. Plan your trip to the nationâs capital by checking out all the things to do, places to eat and ways to stay. Weâll see you soon.