Acquired immunity
Ability to remember a prior exposure which results in an increased immune response
Acquired immunity, also known as specific immunity or adaptive immunity, is a type of immunity that develops over time as an individual is exposed to various pathogens (such as viruses, bacteria, and fungi) or antigens (such as allergens and toxins). This type of immunity involves the activation of specific cells and molecules in response to a particular pathogen or antigen, resulting in a targeted and effective immune response.
Acquired immunity can be further divided into two types: humoral immunity and cell-mediated immunity. Humoral immunity involves the production of antibodies by B cells, which bind to and neutralize pathogens or antigens in the body. On the other hand, cell-mediated immunity involves the activation of T cells, which directly attack and kill infected cells and help to coordinate the immune response.
Acquired immunity can be obtained through natural or artificial means. Natural acquired immunity develops over time as an individual is exposed to pathogens and antigens in their environment and builds immunity to them. Artificial acquired immunity, on the other hand, is obtained through vaccination or immunization, where a weakened or inactivated form of a pathogen is introduced into the body to stimulate an immune response without causing disease.
Overall, acquired immunity plays a crucial role in protecting the body from harmful pathogens and antigens, and is essential for maintaining overall health and well-being.
More Answers:
Acute Phase Reactants: Their Role in Immune and Inflammatory Responses and Diagnostic Significance.Internal Defense System: How the Immune System, Lymphatic System, and White Blood Cells Protect the Body
Exploring the Human Body’s External Defense System: Skin, Mucous Membranes, and Immune Response