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.
If leukemia is present, the type and severity of the disease can be determined. This test will also help establish a baseline for bone marrow cells, to see how they respond to treatment. Spinal tap (lumbar puncture) and cerebrospinal fluid analysis. If leukemia is found in the bone marrow, a spinal tap may also be done to look for leukemia cells in the cerebrospinal fluid (CSF).