Antibody soluble protein molecule produced and secreted by B cells in response to an antigen and capable of binding to that specific antigen. Antigen a substance that provokes an immune response. Also known as B lymphocytes, they are derived from bone marrow and develop into plasma cells, which produce antibodies. Bone marrow soft tissue located in the cavities of the bones. The bone marrow is the source of all blood cells.
Complement destroys antibody-coated cells, produces inflammation, and regulates immune reactions.
Conjugate vaccine a vaccine in which proteins that are easily recognizable to the immune system are linked to the outer coat of the disease-causing organism to promote an immune response. Cytotoxic T cells a subset of T lymphocytes that can kill other cells infected by viruses, fungi or certain bacteria, or cells transformed by cancer. D E Efficacy in vaccine research, the ability of a vaccine to produce a desired clinical effect, such as protection against a specific disease, at the optimal dosage and schedule in a given population. A vaccine may be tested for efficacy in Phase III studies if it appears to be safe and shows promise in smaller Phase I and II studies. Epitope a unique shape or marker carried on an antigen's surface, which triggers a corresponding antibody response.a unique shape or marker carried on an antigen's surface, which triggers a corresponding antibody response.