Abstract
Summary
The ash, calcium and phosphorus contents of rat costal cartilage began to increase subsequent to 20, 16 and 18 days of age, respectively. However, at termination of the experiment (49 days of age), the quantities of the above 3 substances in costal cartilage were still much less than in rib bone. The amounts of collagen, hexosamine and uronic acid in rat costal cartilage had different relationships to animal age. No consistent relationships were observed among changes in the quantities of organic and inorganic cartilage components.
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