WE have recently studied 2 patients with symptoms of cerebral ischemia in whom a reversal of blood flow through the left vertebral artery was demonstrated. In both cases the anatomic lesion producing ...

CEREBROVASCULAR disease ranked third, after heart disease and cancer, as a cause of death in the United States in 1959. Almost 37,000 of these deaths occurred in persons between thirty-eight and sixty ...

Vertebral Basilar Angiogram. (Left) lateral view; (Right) AP view. This study was performed by injecting contrast into the right vertebra artery, which is well opacified. There is also some retrograde ...

Flow cytometry is a technique that analyses thousands of cells rapidly, with the data processed by a computer. Samples of cells contained in a fluid medium that has been labeled with fluorescent ...