ScienceDaily (Feb. 23, 2011) — Vaccine scientists say their "Holy Grail" is to stimulate immunity that lasts for a lifetime. Live viral vaccines such as the smallpox or yellow fever vaccines provide immune protection that lasts several decades, but despite their success, scientists have remained in the dark as to how they induce such long lasting immunity.
Scientists at the Emory Vaccine Center have designed tiny nanoparticles that resemble viruses in size and
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