摘要: Whereas innate immunity can provide the initial defense against infections, completely effective to an invading microbial organism typically requires adaptive immune response specific invader. Adaptive responses in liver contribute both microbes and a variety of pathologic states. The term refers lymphocyte-mediated tailored be classified into humoral cell-mediated immunity, mediated principally by B T lymphocytes, respectively. Antigens are structures found on that recognized as foreign or lymphocytes. elicit from lymphocytes expressing cognate antigen receptors. Such include clonal proliferation lymphocyte differentiation specialized effector cell types with important functions serving fight microbes. release antibody (B cells), killing infected cells (cytotoxic extracellular signaling molecules (i.e., cytokines) act autocrine, paracrine, endocrine fashion other nonimmune cells.