SEROLOGIC BEHAVIOR OF CRYSTALLINE PREPARATIONS OF HYPOPHYSEAL GROWTH HORMONE1

Abstract

Quantitative precipitin tests combined with active and passive anaphylaxis studies gave evidence with one preparation of hormone,that it was either a relatively weak antigen or was mixed with an antigenic contaminant. The former type of test indicated at least 2 antigenic substances, but it was not possible to state whether the hormone was identical with the first reactant. Later prepns. of the hormone were entirely devoid of antigenic activity.