Tessa Laurie Holyoake FRCP FRCPath FMedSci FRSE Tessa Holyoake Born (1963-03-17)17 March 1963 Aberdeen, Scotland Died 30 August 2017(2017-08-30) (aged 54) Loch Tummel, Perthshire, Scotland Cause of death breast cancer Nationality Scottish Education University of Glasgow Occupation medical doctor, clinical scientist Years active –2017 Known for discovered stem cell of chronic myeloid leukaemia Medical career Institutions University of Glasgow, Terry Fox Laboratory Specialism oncology Research chronic myeloid leukaemia