John W. Semple
John W. Semple is a Canadian Scientist at St. Michael's Hospital and a Professor of Pharmacology at the University of Toronto. He was born in Windsor, Ontario in 1959 and received his PhD in Immunology at Queen's University at Kingston, Ontario. In 1991, Semple, along with John Freedman, discovered a T helper cell defect in patients with the bleeding disorder called immune thrombocytopenic purpura. ITP is the condition of having a low platelet count.
The importance of understanding the T cell defects in ITP is that novel therapies aimed at these cells may significantly benefit patients with ITP.
