SEOUL, March 23 (Yonhap) -- A quarter of North Korean defectors from regions near the northeastern Punggye-ri nuclear test site have shown chromosome mutations possibly attributable to exposure to ...
A quarter of North Korean defectors from regions near the Punggye-ri nuclear test site in the northeastern part of the country have shown chromosome mutations possibly attributable to exposure to ...
An international study has identified more than 50 genes on the X chromosome in which mutations may cause poor sperm production. Nearly half of all men with low or zero sperm count have no medical ...