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Immunogenicity of Nanogram to Milligram Quantities of Inactivated Foot-and-Mouth Disease Virus. I. Relative Virus-neutralizing Potency of Guinea Pig Sera

机译:纳米级疫苗对灭活的口蹄疫病毒毫克数量的免疫原性。 I.豚鼠血清的病毒中和能力

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Quantitative antigen dose-neutralizing antibody response curves were established in guinea pigs for purified foot-and-mouth disease virus (FMDV), type A, strain 119, inactivated for 48 hr with N-acetylethyleneimine (AEI). Inactivation of FMDV by 0.05% AEI at 25 C occurred without virus degradation and followed first-order kinetics over a 108-fold decrease in plaque-forming units (PFU) extrapolating to 10-5 PFU/ml at 48 hr. The AEI-treated virus was administered in doses ranging from 10 ng to 2.62 mg, alone or emulsified in oil adjuvant. Sigmoidal dose-response curves were obtained with 160 ng as the minimum effective dose. The maximum effective dose was 163 μg and 2.62 mg or more at 6 and 28 through 84 days postinoculation, respectively. Oil adjuvant had little effect at 6 days postinoculation, but its use markedly increased the amount of neutralizing antibody obtained at the later testing periods.
机译:在豚鼠中建立了纯化的口蹄疫病毒(FMDV)A型,菌株119的定量抗原剂量中和抗体反应曲线,并用N-乙酰基乙亚胺(AEI)灭活了48小时。在25°C时,FMDV被0.05%AEI灭活,没有病毒降解,并且在48小时时,斑块形成单位(PFU)下降了108倍,其一级动力学随即外推至10-5 PFU / ml。单独或在油佐剂中乳化的AEI处理病毒的剂量范围为10 ng至2.62 mg。以160 ng作为最小有效剂量获得了S形剂量反应曲线。接种后第6天和第28天到84天的最大有效剂量分别为163μg和2.62 mg或更高。油佐剂在接种后6天几乎没有作用,但其使用显着增加了在随后的测试期间获得的中和抗体的量。

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