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Immunostimulating substances from human casein

Delipidated human casein was digested with trypsin and the enzymatic digest was fractionated on Sephadex G-50. The peptidic fractions were assayed for immunomodulating activity in two in vitro models. Fractions corresponding to molecular weights in the range of 2,000 +/- 600 were found to possess stimulating activity in these models.

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