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What is metastasis,and why is metastatic cancer the most difficult cancer to treat?
Bone Marrow
A soft tissue inside bones where blood cells are produced.
Lymphoid Organ
Organ other than a lymphatic vessel that is part of the lymphatic system; the lymphatic organs are the lymph nodes, tonsils, spleen, thymus gland, and bone marrow.
Kidneys
Bean-shaped organs that filter waste products from the blood, regulate fluid balance, and maintain electrolyte balance.
Bone Marrow
The soft, spongy tissue inside bones where blood cells are produced.
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