ahlam1399
07-23-2017, 04:24 PM
From tiny, dissolving needles to high-powered liquid streams and nasal sprays, scientists are developing alternatives to typical vaccinations.
أكثر... (http://www.npr.org/sections/health-shots/2017/07/23/537287781/beyond-the-nasty-needle-trying-to-make-vaccines-more-comfy-and-convenient?utm_medium=RSS&utm_campaign=news)
أكثر... (http://www.npr.org/sections/health-shots/2017/07/23/537287781/beyond-the-nasty-needle-trying-to-make-vaccines-more-comfy-and-convenient?utm_medium=RSS&utm_campaign=news)