Obituaries

Stanford Medicine —

Pathologist, Christmas tree farmer Jon Kosek dies at 90

An outdoor enthusiast, bicyclist and founder of a Christmas tree farm, Kosek was a staff pathologist at the VA Palo Alto Heath Care System for nearly 45 years, mentoring hundreds of residents and students.

Stanford Medicine —

HIV/AIDS researcher David Katzenstein dies

The Stanford virologist conducted clinical vaccine trials, which led to the approval of antiretroviral drugs, greatly improving the survival of people living with HIV.

Stanford Today —

Stanford French Professor Ralph Hester dies

Hester, who co-authored a widely used French college textbook, was dedicated to promoting French Studies in interdisciplinary contexts.