ahlam1399
12-20-2017, 12:10 PM
The US government on Tuesday lifted a ban on making lethal viruses, saying the research is necessary to "develop strategies and effective countermeasures against rapidly evolving pathogens that pose a threat to public health."
أكثر... (http://www.cnn.com/2017/12/19/health/nih-deadly-viruses-bn/index.html)
أكثر... (http://www.cnn.com/2017/12/19/health/nih-deadly-viruses-bn/index.html)