Complex sentence: The gamma rays have long pathlengths, which have orders of magnitude greater depths of penetration compared to internal conversion and Auger electrons that have pathlengths of approximately one cell diameter and can directly cause DNA damage.
Split into simpler sentences: The gamma rays have long pathlengths, which have orders of magnitude greater depths of penetration compared to internal conversion and Auger electrons. These have pathlengths of approximately one cell diameter and can directly cause DNA damage.