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Mixed Connective Tissue Disease
(MCTD)

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What are connective tissues?

The connective tissues are the structural portions of our body that essentially hold the cells of the body together. These tissues form a framework or matrix for the body. The connective tissues are composed of two major structural molecules, collagen and elastin. There are many different collagen proteins that vary in amount in each tissue of the body. Elastin is another protein that has the capability of stretching and returning to original length like a spring. Elastin is the major component of ligaments (tissues which attach bone to bone).

Connective tissue diseases are disorders featuring abnormalities involving the collagen and elastin. Connective tissue diseases are often characterized by a variety of immune abnormalities that are common for each particular type of illness.



Source: MedicineNet.com
http://www.medicinenet.com/mixed_connective_tissue_disease/article.htm

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