传统疫苗制备常采用加热或化学方法来灭活细菌。然而,美国加利福尼亚大学圣迭戈分校医学院的研究者发现,采用γ辐射制备的疫苗的效力强于“灭活”疫苗,而且贮存期长于活疫苗。研究者相信这些结果可使疫苗生产成本降低,贮存容易,无需冷藏运输。研究者分别用加热灭活的单核细胞增 Traditional vaccine preparation often uses heating or chemical methods to inactivate bacteria. However, researchers at the University of California San Diego School of Medicine found that vaccines prepared with γ-radiation are more potent than “inactivated” vaccines and have a longer shelf-life than live vaccines. Researchers believe these results will reduce vaccine production costs, ease of storage, and no need for refrigerated transport. The researchers used heat-inactivated mononuclear cells