Critique on the analysis of photorepair in chick-embryo fibroblasts

It is shown that the data by Van de Merwe and Bronk on photoreactivation of chick-embryo fibroblasts do not support the particular application of the Rupert -Harm model used in the paper by Pendrys [6]. Further, it is shown that for blacklight intensities greater than 17 W/m2 at 365 nm, there is approximate reciprocity (i.e. the extent of photoreactivation of available dimers is determined primarily by total blacklight fluence).