System action: The statement cannot be executed. Programmer response: If the problem is caused by a. nonunique column name in a nested table expression, change the nested table expression so that the column. name is unique. If the problem is caused by the use of. an unqualified name, qualify it with a table, view, or. correlation name.
Antigens formed on the surface of red blood cells, whose presence and structure are genetically determined. agglutinins Antibodies in blood plasma that cause clumping of corpuscles or bacteria. ABO blood group blood type determined by the hereditary presence or absence of antigens A and B on red blood cells
Platelet disorders first cause small red or purple dots on the skin. Later, if the disorder becomes severe, bleeding may occur. A decrease in blood clotting factors usually causes bleeding and bruising. Defects in blood vessels usually cause red or purple spots and patches on the skin, rather than bleeding.