tests conducted on albino rats of the wistar line demonstrated that introduction of large doses of ergocalciferol ( vitamin d2 ) to animals kept on a strontium-rich diet exhibiting signs of rickets brings about the development in them of specific manifestations of the d-vitamin activity , viz . rising level of calcium , strontium and inorganic phosphorus in the blood serum , lowering of the alkaline phosphatase activity and a greater degree of the soft tissues calcification .
C0014695
vitamin d2
C0035579
rickets