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1
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a small blood vessel from 5 to 10 micrometres in diameter, and having a wall one endothelial cell thick.
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2
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an organ found in virtually all vertebrates.
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3
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organized lymphoid follicles, named after the 17th-century Swiss anatomist Johann Conrad Peyer.
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4
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the larger of the two lymph ducts of the lymphatic system.
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6
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two nodes that take part in the defense mechanisms of the body.
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7
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the superior-most of the tonsils.
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9
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a circumscribed channel leading from an exocrine gland or organ.
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10
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a paired large vein, one on either side of the body, that is responsible for draining blood from the upper extremities, allowing this blood to return to the heart.
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1
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a series of tubules and ducts that physically connect nephrons to a minor calyx or directly to the renal pelvis.
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5
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a specialized primary lymphoid organ of the immune system.
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8
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anatomical term for the central part or core of many animal bodies which extend the neck and limbs from.
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11
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a colorless fluid containing white blood cells, which bathes the tissues and drains through the lymphatic system into the bloodstream.
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12
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the components of the circulatory system that transport blood throughout the human body.
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13
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a point at which lines or pathways intersect or branch
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