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lymph nodes
Facts (14)
Sources
The components of the immune system - Immunobiology - NCBI - NIH ncbi.nlm.nih.gov 9 facts
referenceAfferent lymphatic vessels drain fluid from tissues and carry antigen-bearing cells and antigens from infected tissues to the lymph nodes, where they are trapped.
procedureAfter proliferation and differentiation, antigen-specific lymphocytes leave lymph nodes as effector cells through the efferent lymphatic vessel.
referencePeripheral lymphoid tissues are dynamic structures that change in response to infection; for example, B-cell follicles in lymph nodes expand as B lymphocytes proliferate to form germinal centers, causing the lymph node to enlarge.
referenceIn lymph nodes, B lymphocytes are localized in follicles, while T cells are more diffusely distributed in surrounding paracortical areas known as T-cell zones.
procedureDuring a peripheral infection, dendritic cells take up large amounts of antigen and travel through afferent lymphatic vessels into draining lymph nodes to display the antigen to and activate recirculating T lymphocytes.
claimThe peripheral lymphoid organs, which include the lymph nodes, the spleen, and the mucosal lymphoid tissues, are the sites where antigen and lymphocytes encounter each other.
referenceLymph nodes are highly organized lymphoid structures located at the points of convergence of vessels of the lymphatic system.
claimThe three major types of peripheral lymphoid tissue are the spleen (which collects antigens from blood), lymph nodes (which collect antigen from infection sites in tissues), and mucosal-associated lymphoid tissues (MALT) (which collect antigens from epithelial surfaces).
claimUpon encountering a pathogen, dendritic cells rapidly mature and migrate to lymph nodes.
The immune system and primary immunodeficiency primaryimmune.org 3 facts
claimMature T cells leave the thymus as naïve T cells and populate organs such as the spleen, lymph nodes, bone marrow, and blood, where they may become memory T cells after antigen exposure.
claimPlasma cells are the mature form of B cells that produce antibodies and are located in the spleen and lymph nodes.
claimMature B cells are located in the bone marrow, lymph nodes, spleen, some areas of the intestine, and the bloodstream.