Osteocytes are bone cells. Collagen fibers and calcium salts are found in abundance between and among the osteocytes. The collagen and calcium salts are .. a) components of the plasma membrane of osteocytes. b) extensions of the endoplasmic reticulum. c) part of the extracellular matrix secreted by osteocytes. d) components of the cytoskeleton of osteocytes. e) deposited by the circulatory system and are not associated with the osteocytes.

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Defense Mechanism

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