The Antigenic Potency of Non-infectious Poliomyelitis Virus as Determined by Its Liberating Effect on Active Virus Neutralized by Immune Serum

Immunity following the Injection of Monkeys with Mixtures of Poliomyelitis Virus and Convalescent Human Serum

1. Experiments are reported on the use of poliomyelitis virus neutralized by specific antiserum as an agent to induce active immunity against the experimental disease in monkeys. 2. The results indicate that protection can be conferred upon a certain number of the treated animals. 3. The neutralized material gave rise in no instance to symptoms of disease in the treated monkeys. 4. Active polio...

An Endogenous Immune Adjuvant Released by Necrotic Cells for Enhancement of DNA Vaccine Potency

Background: Improving vaccine potency in the induction of a strong cell-mediated cytotoxicity can enhance the efficacy of vaccines. Necrotic cells and the supernatant of necrotic tumor cells are attractive adjuvants, on account of their ability to recruit antigen-presenting cells to the site of antigen synthesis as well as its ability to stimulate the maturation of dendritic cells. Objective: T...

Evaluation and comparison of Hela, Hep2C and Vero cell lines sensitivity to polio vaccinal virus using micro and macro vaccine potency tests

Poliomyelitis, an acute viral infectious disease caused by poliovirus, still remains a public health problem in developing countries. Despite the global effort to eradicate polio, continuing the polio immunization with a potent and safe vaccine is essential. For accurate vaccine evaluation, three types of cell lines including Hela, Hep2C and Vero were evaluated and compared using two methods of...

Replication Kinetic of Infectious Laryngotracheitis Virus in Embryonic Chicken Neural Stem Cell

Background and Aims: Infectious laryngotracheitis virus (ILTV) infection causes a highly contagious respiratory disease in poultry leads to significant economic losses in the poultry industry. The genomic and antigenic characteristics between virulent and vaccine strains of ILTV are very similar. The ability of embryonated chicken neural stem (CNS) cell for differential diagnosis of ILTV strain...

Antigenic variation between rabies virus strains and its relevance in vaccine production and potency testing