Gertrud Theiler Prize in Physiology or Medicine for development of the yellow fever vaccine. Gertrud Theiler Gertrud Theiler (11 September 1897 – 2 May 1986) was a South African parasitologist and teacher most noted for her work with nematodes and ticks. Born on 11 September 1897 in Pretoria, South Africa, Theiler graduated from Pretoria Girls’ High School and spent a year at Rhodes University College in Grahamstown, South Africa, before transferring to South African College in Cape Town, where she graduated in 1918 with a Bachelor of Science degree. She went to Europe to undertake postgraduate work in helminthology at the University
Nobel Prize controversies Erwin Hahn for his contribution to the principles of spin echoes. The 2000 prize went to Arvid Carlsson, Paul Greengard, and Eric R. Kandel, "for their discoveries concerning signal transduction in the nervous system". The award caused many neuroscientists to protest that Oleh Hornykiewicz, who helped pioneer the dopamine replacement treatment for Parkinson's disease, was left out, and that Hornykiewicz's research provided a foundation for the honorees' success. The Nobel Prize for Physiology or Medicine was awarded in 1998 to Robert Furchgott, Louis Ignarro and Ferid Murad "for their discoveries concerning nitric oxide as a signalling molecule in the cardiovascular