To consruct dose-effect relation between rate of choromosome aberration,dic+r,ace,aberrant cells and 14.8 MeV monoenergy neutron radiation after peripheral blood taked from 3 adults exposed to 0、0.1、0.3、0.6、1.0、2.0、3.0、4.0 Gy 14.8 MeV neutron in vitro.The result indicate that there are good linear relation between rate of choromosome aberration,choromosome aberration,dic+r,ace,aberrant cells and 14.8 MeV monoenergy neutron radiation.Regression equations are Ya=0.0434+0.2035D、Ydic+r=0.0291+0.0607D、Yace=0.012...