IMMUNOCHEMICAL STUDIES OF HUMAN GROWTH HORMONE, OVINE PROLACTIN, BOVINE GROWTH HORMONE AND A TRYPTIC DIGEST OF BOVINE GROWTH HORMONE

Agar gel double diffusion and immunoelectrophoresis of human growth hormone (HGH), ovine prolactin, bovine growth hormone (BGH) and a tryptic digest of BGH (TBGH) were performed. Antisera to BGH, TBGH, HGH and ovine prolactin were used for the tests. Both BGH and TBGH were found to contain material that precipitated with antiserum to ovine prolactin. Immunological analysis of various fractions of BGH and TBGH separated by chromatography on DEAE-cellulose showed that BGH and TBGH were eluted before prolactin. No differences between BGH and TBGH in their immunological reactions were found. HGH did not cross-react with BGH, TBGH or ovine prolactin