ENGL 224 Lecture Notes - Lecture 2: Cytotoxic T Cell, Adaptive Immune System, Humoral Immunity
Document Summary
The target of an adaptive immune response is an antigen. A molecule that stimulates an immune reaction by b cells and t cells. Adaptive immunity is divided into 2 subcategories: humoral immunity, cell-mediated immunity. Macrophages trigger both cell-mediated and humoral immunity. Adaptive immunity targets pathogens: a macrophage engulds a bacterium and dismantles it, antigenes from the bacterium are displayed on the macrophage surface, the macrophage travels in lymph to a lymph node, where helper t cells initiate and. The free antibodies might be a result of: In passive immunity, an individual receives antibodies from another individual. Active immunity results from the body"s own production of antibodies. Which of the following participates in both innate and adaptive immunity? macrophages. It stimulates active immunity against a pathogen without causing illness. Contains antigens that teach the immune system to recognize the pathogen. Memory cells linger after the initial exposure to the antigens in the vaccine.
