MicroRNAs track radiation doses
Blood levels of genetic material could help identify people at risk after exposure
![microRNA and radiation](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/05/ti_microRNA.png?fit=860%2C460&ssl=1)
MOLECULAR GEIGER COUNTER The abundance of small pieces of genetic material called microRNAs falls or rises in the blood of mice after radiation exposure. A lethal dose of 8 grays of radiation (red dots) produces a different pattern than a serious but survivable dose of 6.5 grays (black triangles).
S.S. Acharya et al/Science Translational Medicine 2015