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If Teeth Are Not Bones or Organs, What Exactly Are They?They contain two types of tissue that help to ensure strength: Compact bone: Also called "cortical bone," compact bone is the dense, hard outer layer. Cancellous: Also called "trabecular "or ...
Bone marrow is a semi-solid tissue found within the spongy (also known as cancellous) portions of bones. In birds and mammals, bone marrow is the primary site of new blood cell production (or ...
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