The concentration of ascorbic acid in the plasma was determined on four levels of ascorbic acid intake for seven day periods in 1946-47 and on three levels of ascorbic acid intake for ten day periods in 1947-48. The s ...

The blood thiamine concentration of 11 subjects was determined by means of the Friedemann and Kmieciak (1943) method every 5 days during a 30-day experimental period. Study I was conducted on 5 students in 1947 and St ...