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A lumbar puncture. The needle is inserted between the lumbar vertebrae and into the spinal canal.
Pneumothorax. Figure illustrates how puncture of thoracic wall and tearing of pleural membrane allow
Ileostomy. Note that the cecum and colon have been surgically removed.
Gangrene of the toes and foot as a result of an infection often means eventual amputation.
In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th
Temperature Means and Ranges