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Big scientific encyclopedia "Immunology and Virology". The functioning of the immune system is studied by the science of immunology. Immunology studies the body's reactions to antigens. The immune system protects the body from infections, toxins, and cancer cells. The immune system must recognize a wide range of pathogens, from viruses to multicellular worms, and distinguish them from the body's own healthy tissues. Immunological memory forms the basis of vaccination and allows the body…

Big scientific encyclopedia "Immunology and Virology".

The functioning of the immune system is studied by the science of immunology. Immunology studies the body's reactions to antigens.

The immune system protects the body from infections, toxins, and cancer cells. The immune system must recognize a wide range of pathogens, from viruses to multicellular worms, and distinguish them from the body's own healthy tissues.

Immunological memory forms the basis of vaccination and allows the body to develop a stronger immune response to a pathogen after the first encounter with it.

Immune system dysfunctions lead to autoimmune diseases, inflammatory diseases and cancer. When the immune system is weak, there are immunodeficiency states that make the body more vulnerable to infections. Immunodeficiency can be either congenital due to genetic abnormalities or acquired, for example, as a result of HIV infection or taking immunosuppressive drugs.

Antibodies - the globular proteins of blood plasma, designed to neutralize the cells of pathogens and viruses, protein poisons. Each antibody recognizes an antigen, and within a given antigen - a specific section of it, an epitope. Antibodies can neutralize them, or attract phagocytes to destroy them.

Virology studies viruses and virus-like agents. The main attention is paid to the structure of viruses, their classification and evolution, methods of infection of host cells, their interaction with the physiology and immunity of the host organism, and diseases. Virology is a branch of microbiology. Viruses can cause viral diseases and tumors.

Thanks to the mass vaccination of the population, smallpox was eliminated. There are a number of viral diseases that are incurable at the present stage of the development of science, the most famous of which is HIV infection.

Serology is the science of the properties of blood serum. Typically, serology is understood as the section of immunology that studies the interaction of serum antibodies with antigens.

Serological reactions can be direct - agglutination, passive hemagglutination, precipitation, etc., and indirect - a neutralization reaction, a hemagglutination inhibition reaction.
Complex serological reactions are composed of several "simple" ones: bacteriolysis, complement fixation reaction, etc.

Allergy is a typical immunopathological process, expressed by the hypersensitivity of the body's immune system with repeated exposure of the allergen to the body previously sensitized by this allergen. Symptoms: pain in the eyes, swelling, runny nose, hives, sneezing, coughing, etc.

A food allergy is an abnormal immune response to food. Symptoms of an allergic reaction usually last from a few minutes to several hours. When symptoms are very severe, anaphylactic shock can occur.

Malignant tumor is extremely dangerous for the life of the body. Malignant epithelial tumors are called cancer, this term can mean chorionepithelioma, endothelioma, sarcoma, etc.

Malignant neoplasm is characterized by the appearance of uncontrollably dividing cells capable of invasion of adjacent tissues and metastasis to distant organs. The disease is associated with impaired cell proliferation and differentiation due to genetic disorders.

The development of drugs and methods for the treatment of malignant tumors is an important and still unsolved scientific problem.

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Immunology is a complete offline free handbook of terminology, covers the most important terms and concepts.