1. boron supplementation increases active gest that the amount of calcium released
2. bone formation and causes a greater need from stores after activation with thrombin
3. for collagen (on which calcification is ini- may be decreased by dietary boron.
4. tiated). As a result urinary hydroxyproline However when the platelets were activat
5. is slightly increased. The urinary excretion ed by thrombin in the presence of 1.0 mM