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.
1 Lab tests, such as flow cytometry, that check the types of cells in a biopsy sample. 2  These tests help your doctor find out the type of lymphoma. 3  Lumbar puncture (also called a spinal tap), to find out whether lymphoma cells are in the fluid (cerebrospinal fluid, or CSF) surrounding your brain and spinal cord.