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菌株死活及抗原量对减毒沙门氏菌疫苗载体的影响众所周知，口服灭活的伤寒疫苗对伤寒感染没有任何保护，而口服灭活的沙门氏菌疫苗载体对其所表达的外源蛋白免疫效果是否有影响还未知，作者进行了如下验证试验。质粒ｐＪＣ２１７可表达大肠杆菌热不稳定肠毒素一个亚单位Ｌ...
Strain Survival and Antigen Quantitation Effects on Attenuated Salmonella Vaccine Vectors It is well-known that oral inactivated typhoid vaccines have no protection against typhoid infections, whereas orally inactivated Salmonella vaccine vectors have an effect on the immunogenicity of the expressed foreign proteins Unknown, the author conducted the following verification test. Plasmid pJC217 can express E. coli heat-labile enterotoxin one subunit L ...