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“He is so young and strong and of blood so pure that we need not defibrinate it.”

Fill a large test tube or a small bottle one fourth full of the defibrinated blood and thin it by adding an equal amount of water.

The blood, defibrinated and freshly drawn, has marked germicidal action; for bacteria its action is decidedly deadly, even hours after it has been drawn from the body.

You say that the blood found in the safe was defibrinated or artificially treated.

Van Helsing, turning to me, said, "He is so young and strong, and of blood so pure that we need not defibrinate it."