Um, Letâs Rethink That Salute (1930s) Again, in his book To the Flag: The Unlikely History of the Pledge of Allegiance, Richard J. Ellis explains that by the mid-1930s, Americans had begun to notice eerie similarities between the Bellamy salute and the âHeil Hitlerâ salute.
A lumbar puncture may be used to collect a sample of cerebrospinal fluid in order to detect the presence of certain types of cancer or infection. Lumbar punctures may also be used to inject medications, such as spinal anesthesia or chemotherapy drugs.
Leukemia is a type of cancer in which the body produces large numbers of abnormal (usually white) blood cells. About 28,500 new cases of leukemia are diagnosed each year. There are several types of leukemia, grouped as either acute (the diseases progresses rapidly) or chronic (the diseases progresses slowly).he bone marrow is examined for leukemia cells or to determine the type of leukemia. A lumbar puncture (spinal tap) checks for leukemia cells in the fluid around the brain and spinal cord. Chest x-rays can reveal signs of the disease in the chest.