Abstract
Summary
(a) The serum of new-born calves, before the ingestion of colostrum contains no γ globulin and only small amounts of β globulin, (b) During the nursing period the composition of calf serum changes rapidly.
The γ globulin appears. Both γ and β increase in concentration and then decrease. The concentration of α and albumin decrease during nursing, with that of the albumin finally increasing, (c) During the period of greatest change in composition of the serum, the protein fractions exhibit an abnormally high mobility.
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