| − | '''Bone''' is living, growing [[tissue]] made mostly of collagen. [[Collagen]] is a protein<ref>[http://folding.stanford.edu/download.html Protein & Folding]</ref> that provides a soft "framework", and [[calcium]] is a mineral that adds strength and hardens the framework. The combination of collagen and calcium makes bone the strongest material in the body. More than 99 percent of the body’s calcium is contained in the bones and [[teeth]]. The remaining 1 percent is found in the [[blood]]. | + | '''Bone''' is living, growing [[tissue]] made mostly of collagen. [[Collagen]] is a protein<ref>[http://folding.stanford.edu/download.html Protein & Folding]</ref> that provides a soft "framework", and [[calcium]] is a mineral that adds strength and hardens the framework. The combination of collagen and calcium makes bone the strongest material in the body. More than 99 percent of the body’s calcium is contained in the bones and [[teeth]]. Most of the remaining 1 percent is found in the [[blood]]. |