Richmond T. Prehn: In Memoriam (1922-2016).

![][1] On November 7, 2016, the cancer research community lost Dr. Richmond Prehn (Rich), a lifelong supporter of AACR and former member of its board, a penetrating theoretician, and a decisive experimentalist. Most scientists think in incremental steps and fear taking great leaps

[1]  R. Prehn.  The Immune Reaction as a Stimulator of Tumor Growth , 1972, Science.

[2]  R. Prehn,et al.  An Immunostimulation Theory of Tumor Development , 1971, Transplantation reviews.

[3]  R. Prehn,et al.  Immunity to methylcholanthrene-induced sarcomas. , 1957, Journal of the National Cancer Institute.