After witnessing numerous cases of cancer remission associated with a healer who used “laying on of hands” in New York, one of us (W.B.) “apprenticed” in techniques alleged to reproduce the healing effect. We obtained five experimental mice with mammary adenocarcinoma (code: H2712; host strain: C3H/HeJ; strain of origin: C3H/HeHu), which had a predicted 100% fatality between 14 and 27 days subsequent to injection. Bengston treated these mice for 1 hour per day for 1 month. The tumors developed a “blackened area,” then they ulcerated, imploded, and closed, and the mice lived their normal life spans. Control mice sent to another city died within the predicted time frame. Three replications using skeptical volunteers (including D.K.) and laboratories at Queens College and St. Joseph’s College produced an overall cure rate of 87.9% in 33 experimental mice. An additional informaltest by Krinsley at Arizona State resulted in the same patterns. Histological studies indicated viable cancer cells through all stages of remission. Reinjections of cancer into the mice in remission in Arizona and New York did not take, suggesting a stimulated immunological response to the treatment. Our tentative conclusions: Belief in laying on of hands is not necessary in order to produce the effect; there is a stimulated immune response to treatment, which is reproducible and predictable; and the mice retain an immunity to the same cancer after remission. Future work should involve testing on various dis- eases and conventional immunological studies of treatment effects on experimental animals.