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Nature 396, 118 (12 November 1998) | doi:10.1038/24052

Obituary:  Demetrios Papahadjopoulos (1934-98)

Claude Nicolau1 & Gregory Gregoriadis2

Demetrios Papahadjopoulos, who died in San Francisco on 21 September, was a pioneer in the development of liposomes and their applications. One of these is their use as a system for the efficient, targeted delivery of drugs and vaccines, leading to optimal pharmacological action.