Abstract
Summary
Ovine prolactin (7.5 I.U.) was incubated for 2 hours at 37†C with human blood serum and human fibrinolysin. Moderate decreases of prolactin activity occurred after incubation in 10% serum, and somewhat greater losses occurred when incubated in 45% serum. Fibrinolysin caused almost complete inactivation of prolactin. The relationship of the serum inactivator system to the fibrinolysin system remains to be established.
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