The costal cartilages also frequently become calcified in old age. Fat globules may also be seen in many cartilages. Shown is the costal cartilage from an adult dog with fat globules in the cartilage cells.
Baker, W. Morrant & Harris, Vincent Dormer Kirkes' Hand-book of Physiology, 13th ed. (Philadelphia: P. Blakiston's Son & Co., 1892) 55