FORMATION OF DEFENSIVE FERMENTS
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purpose of studying the question, how long after the actual parenteral introduction of cane sugar the presence of invertin in the blood serum may be demonstrated. After a single subcutaneous injection of cane sugar the power of decomposing this disaccharide was still traceable at the end of fourteen days (curve I in fig. 6). In a dog, which received a
Fig. 6.
subcutaneous injection of cane sugar on two occasions, it was still possible to bring about an energetic splitting of this disaccharide with blood serum after nineteen days (curve II in fig. 6). The property once acquired does not therefore disappear at once. The individual experiments were conducted with the
