Toxicology
Human
X-rays
The testicular regions of male mice were exposed to x-ray doses ranging from 0 to 400 rads. Forty days after exposure the mice were killed and the testes and cauda epididymal were removed. The DFI and SD of DFI increased after 12.5 rads of x-ray exposure with significant increases following 25 rads (Figure 2).

Figure 2. %DFI and SD of DFI showed an increase at 12.5 rads, which became significant from 25 rads to 400 rads(Sailer et al. 1995).