But Why don't you just use h2o in its normal form? Well, after Googling “hydrogel vaccine,” we found this article from Stanford which points out how hydrogels allow for controlled release of your contents of vaccines, making them safer and more effective. Close icon Two crossed lines that form https://collinsqkfx.mybuzzblog.com/5834038/top-latest-five-what-can-you-buy-in-mexico-with-100-pesos-urban-news