Mendel came to work with Hodgkin as a Ramsey Research Fellow from the University of Utrecht. He worked for his D. Phil. degree partly at Oxford and partly at Utrecht (with J.M. Bijvoet q.v.) on creatine and creatinine. He returned to the Netherlands and worked in industry before taking an academic post at the University of Ibadan, Nigeria.

Correspondence relates to research and career. Includes recommendation.