Examlex
What is a theory? How does it differ from a fact or facts? Which is more powerful as an explanatory tool?
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.
Stem Cells
Undifferentiated biological cells that can differentiate into specialized cells and can divide to produce more stem cells.
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