Over the long run, however, the policies of the one-drop rule and segregation, in conjunction with other factors such as a long tradition of racial nationalism and white liberal support, generated a counter-reaction that led to a very different form of racial politics.
Learn about these ultrasound-like tests of the heart -- and find out what to expect -- here. Cardiac Catheterization. Cardiac catheterization -- also called a coronary angiogram -- means running a catheter into your heart. It's done to help doctors see what's going on in there, and whether they need to operate. Here's where to learn about it.
Sometimes, blood tests can help them see how well an organ (such as the liver or kidneys) is working. What Is a Complete Blood Count? A complete blood count (CBC) test is a blood test that helps doctors check the level of different types of cells in the blood. A CBC measures: red blood cells, which deliver oxygen to the different parts of the body