1. Low-Dose Irradiation of Nontransformed Cells Stimulates the Selective Removal of Precancerous Cells via Intercellular Induction of Apoptosis
   Daniel I. Portess et al, 2007, Cancer Research CrossRef
2. Nitric oxide mediates apoptosis induction selectively in transformed fibroblasts compared to nontransformed fibroblasts
   Stefanie Heigold et al, 2002, Carcinogenesis CrossRef