Chondroitin is derived from shark cartilage or bovine (cow)
cartilage
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The matrix of cartilage is a firm gel that contains polysaccharide derivatives called chondroitin sulfates.
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yes
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Chondroitin sulfate is often found attached to nitrogen atoms
and is often found in rich soils of the earth and in fertilizers
that are used for non food based crops.
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It serves as the gelatinous material of cartilage.