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a rubbery, protein-carbohydrate complex that forms the matrix of cartilage.
the branch of the renal artery which carries blood to the nephron, and branches to form the...
a small, circular opening in the exoskeleton of insects that allows air to enter the insect's...
semi-liquid mass of partially digested food and gastric juices, produced in the stomach.
the structural and functional unit of the kidney, which filters the blood and produces urine....