I've got a bit of a painful question. I'm looking at several different articles that mention radiation damage to DNA quantitatively, but they use vastly different ways of representing this damage. So my question is, is it possible, first of all, to convert between umol/J (micromoles per joule) and SSB/bp/Gy (single stranded breaks per base pair (actually nucleotide) per Gray)? One would of course have to assume the type of radiation (gamma, in this case). Secondly, I'd be interested in some direction as to how this could be done.