Cartilage:
1. The cellular elements of the cartilages are chondrocytes.
2. The matrix contains a protein called chondrin.
3. It is soft except calcified cartilage.
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4. It is avascular (not supplied with blood vessels).
5. Marrow cavity is absent.
6. Canaliculi are absent.
7. Cartilage is covered by perichondrium.
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Bone:
1. The cellular elements of the bone are osteocytes.
2. The matrix contains a protein called ossein.
3. It is hard due to the deposition of phosphates and carbonates of calcium in the matrix.
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4. It is vascular (supplied with blood vessels).
5. Marrow cavity is present.
6. Osteocytes rinterconnected canaliculi.
7. Bone is covered by periosteum.