CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Abdominal lymph vessels. Lymphography (lymph vessel X-ray) of the abdomen, showing the bones and lymph vessels. The nodes show up as brighter areas, and have been highlighted by the injection of a contrast medium. This frontal view includes spinal and pelvic bones. The lymphoid system, which is part of the immune system and associated with blood vessels, circulates a clear fluid called lymph.
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