Professor Gatter was elected to a Fellowship in 1989 and to an Emeritus Fellowship in 2013, following his retirement.
Professor Gatter was Head of the Department of Cellular Science and led it through mergers with Clinical Biochemistry and the Nuffield Department of Pathology to create NDCLS, now a Division within the Radcliffe Department of Medicine.
Professor Gatter was clinically active throughout his career and was an internationally recognised expert in haematopathology. He made seminal research contributions to the development of immunohistochemistry and to the classification of lymphomas, later pursuing an interest in angiogenesis.
He was recognised by ISI Thompson Scientific as one of the most highly cited and influential researchers in his field.