دانلود کتاب ایمونولوژی مولکولی

The recent experience of the COVID-19 (coronavirus disease 2019) pandemic, the discussion about the origin of SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) as well as effective vaccination against it remind all of us that we should know more about the system that keeps us alive: immunity. Our immune system is composed of biological structures like the lymphatic system and bone marrow, cell types like leukocytes (cellular immunity) and proteins like antibodies and complement proteins (humoral immunity). The perfect balance of these components protects us against infectious diseases and cancer.Molecular immunology aims to understand the collective and coordinated response of these cells and proteins to substances that are foreign to our body. The main purpose of this immune response is the fight against microbes, such as viruses, bacteria, fungi and parasites. However, the example of allergic reactions, which nowadays are getting continuously more common, demonstrates that also non-microbial molecules can induce a strong reaction of our immune system.Moreover, incorrect reactions of the immune system can lead to autoimmune diseases, such as diabetes type I and multiple sclerosis. Thus, immune responses can cause tissue injuries that may harm our body more than the effects of pathogenic microbes. These collateral damages may make us severely ill or even kill us, such as in case of bacterial sepsis or strong responses to SARS-CoV-2 infections.