Miễn dịch mua lại nhiễm trùng tích cực tiếp theo hoặc được chủng ngừa bằng vắc-xin. Bệnh sdisease A 'ddison kết quả từ sự hủy diệt của tuyến thượng thận, đặc trưng bởi suy nhược, yếu đuối và nhạy cảm rất lớn đến sự căng thẳng của nhiễm trùng, chấn thương, . Các tính năng khác bao gồm hạ đường huyết tự phát và sắc tố. | Glossary Active immunity Immunity acquired actively following infection or immunisation by vaccines. Addison s disease Disease resulting from destruction of adrenal glands characterised by weakness debility and very great susceptibility to the stress of infection trauma etc. Other features include spontaneous hypoglycaemia and pigmentation. Adjuvant A material that enhances the immune response to an antigen. Agglutination Clumping together of proteins in antigen-antibody reactions or microorganisms or red blood cells haemagglutination . Agonist Something that stimulates a biological response by occupying cell receptors. Aleutian disease virus This virus infects mink and causes a fatal immunopathological disease in the type of mink that are homozygous for a recessive gene conferring the Aleutian coat colour. Anamnestic response Secondary immune response see Primed . Anterior horn cells The main motor neurons in the anterior horn as seen in cross-section of the spinal cord supplying striated muscle. Antigen presentation Display on the cell surface of processed peptides in combination with MHC proteins. Antigen processing Proteolytic digestion of a protein to form peptides which combine with MHC proteins to be presented on the cell surface to specifically reactive T cells. Antigenic determinant epitope The small site on the antigen to which antibody attaches. Large antigens such as proteins carry several different antigenic determinants on the molecule against which several different antibodies are formed. Antigenic site A cluster of epitopes antigenic determinants . . Apoptosis Death of a cell in which it rounds up and is phagocy-tosed. It is not lysed. Involved in the natural regulation of cell numbers in tissues and occurs as the result of signals transmitted by adjoining cells. Is triggered by some viruses and inhibited by others see Ch. 8 . 427 428 Mims Pathogenesis of Infectious Disease Arthus response Inflammatory reaction formed at the site where antigen is
