ahlam1399
02-22-2018, 02:01 AM
The thought of a vaccine might conjure up memories of that flu shot you get each year, or taking your kids to get their immunizations against polio or measles. Cancer rarely comes to mind when most people think of vaccines, but that appears to be changing.
أكثر... (https://www.cnn.com/2018/02/21/health/cancer-vaccines-explainer/index.html)
أكثر... (https://www.cnn.com/2018/02/21/health/cancer-vaccines-explainer/index.html)