Oregon scientists uncover sub-atomic instruments that produce DNA harm in sperm Kumar Jeetendra | October 25, 2020 University of Oregon biologists have used the model organism Caenorhabditis elegans to identify molecular mechanisms that produce DNA damage in sperm and contribute to male infertility following exposure to heat. In humans, the optimal temperature for sperm production is just below body temperature, in a range of approximately 90-95 degrees F. Human studies have found …