Rosalyn Sussman Yalow (born the July 19th 1921 with New York) is a American physician . She was prize winner of the Nobel Prize in 1977 with Roger Guillemin and Andrzej Wiktor Schally, for their discoveries on the hormonal system and, in particular, the sequencing of TRH and the GnRH and the study of the role of the latter Neurohormone in the release of FSH and LH.