...T. Hoffmann; G. Gunz; T. Brue; P. Jaquet; C. Ronin Prolactin (hPRL) secreted by human prolactinoma cells in culture was purified by gel filtration, lectin affinity chromatography and gel electrophoresis in order to identify the different isoforms of the hormone and to test their respective...

...-secreting malignancies. In serum and urine, hCG appears in microheterogeneous isoforms with respect to protein backbone structure and the extent of glycosylation. The present study reports on the identification, immunological characterization, biological activity of glycosylation isoforms of pregnancy (preg...

...Sara N. De Biasi; Gabriela T. Pérez; Liliana I. Apfelbaum; Marta E. Apfelbaum Objective: The aim of the present report was to determine the possible modifications in rat pituitary LH isoforms induced by the spontaneous increase in GnRH at the time of the preovulatory gonadotropin surge. Design...