Calcification VI. Adenosinetriphosphate Content of Preosseous Cartilage.

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Abstract
ATP has been identified in TCA filtrates of epiphyseal cartilage of rat tibiae. The levels present are approx. those found in kidney, liver, and brain. The disappearance at ATP from cartilage slices incubated in basal soln. is retarded initially by small amount of Ca ion. This may account in part for the prevention by Ca of the deterioration of the calcifying mechanism as reported earlier. A similar correlation does not occur in the case of glycogen.