Abstract
Summary
The coiled threads and filaments described by Gross as essential components of elastin, liberated from the tissue by tryptic digestion, and later described by Franchi and DeRobertis as products of tryptically digested bacterial flagellae have been demonstrated to be present in Armour's crystalline trypsin, but not in the more highly purified product “Tryptar,” and can be produced by incubation from clear, sterile solutions of crystalline trypsinogen. This process probably represents a fibrous transformation of trypsinogen, a component or contaminant thereof.
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