Ross C K, Klassen N V
Phys Med Biol. 2009 Mar 7;54(5):L11-3; author reply L15-21. doi: 10.1088/0031-9155/54/5/L02. Epub 2009 Feb 10.
The authors of a recent paper (Claridge Mackonis et al 2007 Phys. Med. Biol. 52 5469-82) measured cell survival in spatially modulated radiation fields. They claim to have identified two new types of radiation-induced bystander effect. We conclude that their claims are not supported by their data.