active immunity definition
Active and Passive Immunity. Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune as a result of the primary immune response. Artificially acquired active immunity can be induced by a vaccine, a substance that contains the antigen.rtificially acquired passive immunity is a short-term immunization by the injection of antibodies, such as gamma globulin, that are not produced by the recipient's cells. artificial immunity. includes acquired (active) immunity produced by deliberate exposure to an antigen, such as a vaccine or the administration of antibody (passive). cellular immunity. dependent upon T lymphocytes which are sensitized by first exposure to a specific antigen.ctive immunity. that which follows exposure to an antigen; acquired immunity attributable to the presence of antibody or of immune lymphoid cells formed in response to antigenic stimulus. Called also adaptive immunity. Active immunity. Definition. noun. A type of immunity or resistance developed in an organism by its own production of antibodies in response to an exposure to an antigen, a pathogen or to a vaccine.Supplement.ctive immunity is generally long-term and can be acquired by infection followed by B cells and T cells activation, or artificially acquired by vaccines, in a process called immunization. Thus, an active immunity often involves humoral immunity (B-cells) and cell-mediated immunity (T-cells). | Share | Cite. Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune as a result of the primary immune response.Artificially acquired active immunity can be induced by a vaccine, a substance that contains the antigen.rtificially acquired passive immunity is a short-term immunization by the injection of antibodies, such as gamma globulin, that are not produced by the recipient's cells. Definition of ACTIVE IMMUNITY. : usu. long-lasting immunity that is acquired through production of antibodies within the organism in response to the presence of antigens — compare passive immunity.See active immunity defined for kids.ADVERTISEMENT. usu. long-lasting immunity that is acquired through production of antibodies within the organism in response to the presence of antigens — compare passive immunity. See active immunity defined for kids. ADVERTISEMENT. active immunity, a form of long-term, acquired immunity. It protects the body against a new infection as the result of antibodies that develop naturally after an initial infection or artificially after a vaccination. Compare passive immunity. See also acquired immunity, immune response, natural immunity.ctive immunity. that which follows exposure to an antigen; acquired immunity attributable to the presence of antibody or of immune lymphoid cells formed in response to antigenic stimulus. Called also adaptive immunity. Defining Active Immunity. You might think that active immunity is immunity that comes from being active. That's not really the case though. Active immunity is immunity that develops from creating antibodies to a disease or illness.Immunity refers to having a resistance to a disease or illness.efining Active Immunity. You might think that active immunity is immunity that comes from being active. That's not really the case though. Active immunity is immunity that develops from creating antibodies to a disease or illness. acquired immunity. antigen specific immunity attributable to the production of antibody and of specific immune T lymphocytes (responsible for cell-mediated immunity), following exposure to an antigen, or passive transfer of antibody or immune lymphoid cells (adoptive immunity). active immunity.that which follows exposure to an antigen; acquired immunity attributable to the presence of antibody or of immune lymphoid cells formed in response to antigenic stimulus. Called also adaptive immunity.ctive immunity. that which follows exposure to an antigen; acquired immunity attributable to the presence of antibody or of immune lymphoid cells formed in response to antigenic stimulus. Called also adaptive immunity. Medical Definition of ACTIVE IMMUNITY. : usually long-lasting immunity that is acquired through production of antibodies within the organism in response to the presence of antigens—compare acquired immunity, innate immunity, passive immunity. usu. long-lasting immunity that is acquired through production of antibodies within the organism in response to the presence of antigens — compare passive immunity. See active immunity defined for kids. ADVERTISEMENT. Active immunity is generally long-term and can be acquired by infection followed by B cells and T cells activation, or artificially acquired by vaccines, in a process called immunization. Thus, an active immunity often involves humoral immunity (B-cells) and cell-mediated immunity (T-cells).ctive immunity is generally long-term and can be acquired by infection followed by B cells and T cells activation, or artificially acquired by vaccines, in a process called immunization. Thus, an active immunity often involves humoral immunity (B-cells) and cell-mediated immunity (T-cells).
A type of immunity or resistance developed in an organism by its own production of antibodies in response to an exposure to an antigen, a pathogen or to a vaccine.Supplement.