抄録
After dosing of thiamine, riboflavin, pyridoxine, ascorbic acid, nicotinic acid, vitamin A and B_<12> together to 20 students the concentration of pantothenic acid in serum showed an increase in 7 students and a decrease in 3 students. By examination of effect of separate administration of thiamine, riboflavin, ascorbic acid or vitamin A the concentration of pantothenic acid was found to increase by thiamine and in lesser extent by riboflavin. Excretion of pantothenic acid in 24 hours urine showed a same trend as the pantothenic acid concentration of serum, i. e. , dosing of thiamine or in lesser degree of riboflavin increased the excretion of pantothenic acid .
