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.
In a full-page ad that ran this week in the New York Times, the company said that while the test can detect 92% of colon cancers, both false positives and false negatives do occur.. It said that up to 13% of people tested were incorrectly diagnosed by Cologuard as having potentially cancerous polyps.