MICR 270 Study Guide - Final Guide: Type Ii Hypersensitivity, Fc Receptor, Tumor Microenvironment

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Micr module 1 intro to the immune system. The lymphatic vessels, distributed throughout the body, pick up the lymph & carry it towards the heart, where it re-enters the circulatory system: cells of immune system travel within both the circulatory & lymphatic system. Mature immune cells travel within the blood to the site of infection, where they enter the tissues, & bind to the antigen. This includes: thymus & bone marrow organs where lymphocyte precursor cells mature into imunocompetent cells. Functions of the immune system proteins on the surface of pathogens that indicate the invasion of a foreign antigen. The immune system can then initiate an immune response. Innate immune system: the body"s (cid:883)st line of defense against foreign invaders, the innate response consists of physical, chemical, & cellular barriers that are present within the body before the actual onset of infection.

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