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A lumbar puncture. The needle is inserted between the lumbar vertebrae and into the spinal canal.
Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp
Edentulous patient with pieces of bone that became necrotic and continued to slough off after tooth ...
Allis’ sign—demonstration of unequal knee height
Classification of Clouds According to Height and Form
(a) In amniocentesis, a syringe needle is inserted through the walls of the abdomen and uterus to co