A person's blood type is based on the antigens found in the blood. These antigens, A and B are found on the surface of the blood cells and are uses as markers in the body. Type O blood does not have A or B antigens on the red blood cells, but contains both types in the plasma.
The Karst Plateau or the Karst region (Italian: Carso; Slovene: Kras), also simply known as the Karst, is a limestone plateau region extending across the border of southwestern Slovenia and northeastern Italy.he Karst Plateau or the Karst region (Italian: Carso; Slovene: Kras), also simply known as the Karst, is a limestone plateau region extending across the border of southwestern Slovenia and northeastern Italy.
Karst poljas (Bosnian, Croatian, Serbian: kraÅ¡ka polja) 1  Popovo polje in Herzegovina region of Bosnia and Herzegovina. 2  Livanjsko polje (405 km2), near Livno in ZavrÅ¡je (Tropolje) region of Bosnia and Herzegovina. 3  Nevesinjsko polje, near Nevesinje in Herzegovina region of Bosnia and Herzegovina.