Abstract
Summary
We believe that if normal serum and tissue extract are incubated together for one to two hours and then added to citrate plasma, the clotting time will be decidedly longer than if added immediately; but that eclamptic sera (although our series is small) if taken at the optimum time, will not increase the clotting time, thus indicating that the blood of eclamptic patients either is lacking or does not contain the usual amounts of certain substances always present in normal sera∗.
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