Microbiology and Immunology 2500A/B Lecture Notes - Lecture 1: Properdin, Passive Immunity, Colostrum
4 Dec 2017
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Document Summary
Immunity: the state of being able to resist or overcome harmful agents like microbial cells or their products: types of immunity: innate and acquired. Innate: the body has immunity against primary infection before development of acquired immunity. Includes: anatomical systems, and biochemical systems such as lysozyme, spermine, interferon and pro-perdin): acquired: it is stimulated by previous contact with the antigen. If the same antigen enters the body again antibodies are programmed to react and eliminate: an antigen (foreign agent) stimulates antibody production when entered into the human body, antibodies are in the globulin fraction of the serum. Types of acquired immunity include: acquired natural active immunity: immunity acquired when the host has been in contact with a given antigen naturally and has actively produced antibodies against it. Adults seldom contract childhood diseases that generate protection lasting adult life: acquired natural passive immunity: immunity passed from mother to fetus via placental transfer of already formed antibodies.
