作者: K. H. Hanewald , M. P. Rappoldt , J. R. Roborgh
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摘要: A prophylactic test (chick assay) was carried out with pure pre-vitamin D3. The apparent antirachitic activity found to be 35% of that vitamin This result is discussed in connection the kinetics interconversion previtamin D3⇆ observed may interpreted as originating exclusively from D3 formed animal.