- somatic antigens
- antigens, usually cell surface antigens, of the body of a bacterial cell, in contrast to flagellar or capsular antigens. See O a.
Medical dictionary. 2011.
Medical dictionary. 2011.
O — 1. Symbol for oxygen; orotidine. 2. Abbreviation for opening (in formulas for electrical reactions). 3. Symbol for a blood group in the ABO system. See ABO blood group, Blood Groups appendix. 4. An abbreviation derived from ohne Hauch (without a… … Medical dictionary
O antigen — n an antigen that occurs in the body of a gram negative bacterial cell called also somatic antigen compare H ANTIGEN * * * [ohne Hauch, q.v.] the lipopolysaccharide protein somatic antigens of gram negative bacteria, important in the serological… … Medical dictionary
smooth-rough variation — S R variation a genetic mutation or an adaptation seen in bacteria, most often evidenced by a change in the surface of colonies from smooth (S, glossy) to rough (R, dull). The change correlates with pathogenicity, S strains being generally more… … Medical dictionary
Antibody — Immunoglobulin redirects here. For the immunoglobulin family, see Immunoglobulin superfamily. Antibodies redirects here. For the film, see Antibodies (film). Each antibody binds to a specific antigen; an interaction similar to a lock and key. An… … Wikipedia
antigen — Any substance that, as a result of coming in contact with appropriate cells, induces a state of sensitivity and/or immune responsiveness after a latent period (days to weeks) and that reacts in a demonstrable way with antibodies and/or immune… … Medical dictionary
Adaptive immune system — The adaptive immune system is composed of highly specialized, systemic cells and processes that eliminate or prevent pathogenic challenges. Thought to have arisen in the first jawed vertebrates, the adaptive or specific immune system is activated … Wikipedia
immune system — Anat. a diffuse, complex network of interacting cells, cell products, and cell forming tissues that protects the body from pathogens and other foreign substances, destroys infected and malignant cells, and removes cellular debris: the system… … Universalium
genetics, human — ▪ biology Introduction study of the inheritance of characteristics by children from parents. Inheritance in humans does not differ in any fundamental way from that in other organisms. The study of human heredity occupies a central… … Universalium
Cytotoxic T cell — Antigen presentation stimulates T cells to become either cytotoxic CD8+ cells or helper CD4+ cells. A cytotoxic T cell (also known as TC, Cytotoxic T Lymphocyte, CTL, T Killer cell, cytolytic T cell, CD8+ T cells or killer T cell) belongs to a… … Wikipedia
Central tolerance — is the mechanism by which newly developing T cells and B cells are rendered non reactive to self. The concept of central tolerance was proposed in 1959 by Joshua Lederberg, as part of his general theory of immunity and tolerance, and is… … Wikipedia