Abstract
The concentration and percentage distribution of the major serum protein fractions have been studied by the phosphate turbidity method. The mean results obtained on 40 healthy normal adults were as follows total protein, 7.24 g/100 ml; albumin, 4.25 g/100 ml (58.7%); alpha globulins, 1.01 g/100 ml (14.0%); beta globulin 1.15 g/100 ml (15.9%); gamma globulin, 0.83 g/100 ml (11.5%). Erect posture and activity resulted in increased concentrations of serum protein, without altering the percentage of the components. We have also discussed individual variations and the interrelation of posture with activity, as encountered in the experiments.

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