"Low Level
Radiation Health Effects: Compiling  the Data"

Revision 1
March 19, 1998

by Radiation, Science, and Health, Inc.,
Edited by J. Muckerheide

1.3
Animal & Plant Biology

1.3.2
Lower-Order Animals

References
 

"Shielding results in a lower cell growth rate (Fig. 8); this growth inhibition disappears when shielded cultures are simultaneously irradiated. Dose rates per year were 1.49 mGy in the control chambers, 0.27 in the shielded chamber, and 1.59 in the shielded chamber including a thorium nitrate source. Cell proliferation is stimulated when cultures are irradiated at a dose rate of 20.90 mGy/y.

"In control experiments, cultures placed in the two chambers without a shielding device or a radioactive source exhibit the same growth rate."