The human body fights many pathogens in the environment with different methods. One of them is immunity. There are innate and acquired immunities. purpose immunity to maintain body's own biological individuality, identify destroy foreign substances cells, including pathogenic bacteria viruses, as well tumor cells that have grown body. immune response accomplishes this by means myeloid lineage n...

Drawing upon our knowledge of microbial genetics, Burnet has proposed a theory of antibody formation which offers an explanation for certain poorly understood immunologic phenomena (for example, the persistence of antibody for long periods in the absence of contact with the antigen, and the failure to form antibodies to self-antigens under normal conditions). According to Burnet's hypothesis, a...

Vaccination of susceptible mice with St. Louis encephalitis virus induced an acquired immunity to intracerebral inoculation which appeared within 1 week. When first demonstrable this immunity was at a very high level and it remained so for about 6 weeks, after which time it declined and disappeared completely between the 12th and 20th week after vaccination. Humoral antibodies of significant ti...

We recently described a novel, non-host-derived, phage-mediated immunity active at mucosal surfaces, the main site of pathogen entry in metazoans. In that work, we showed that phage T4 adheres to mucus glycoproteins via immunoglobulin-like domains displayed on its capsid. This adherence positions the phage in mucus surfaces where they are more likely to encounter and kill bacteria, thereby bene...

Successful defense against an enemy requires perception of his whereabouts. In the last few years, much progress has been made in delineating the plant molecular sentinels that participate in pathogen identification. This ability is encoded by genetically “hard-wired” information, and is called “innate immunity”. It draws its origins from a phylogenetically ancient form of immunity that is comm...

Malignant syphilis is considered a rare disease, more commonly affecting individuals with poor immunity. We report case of acquired immune deficiency syndrome (AIDS) repeated crusted ulcerat...