Definition of Lymphoid tissue

1. Noun. Tissue making up the lymphatic system.


Medical Definition of Lymphoid tissue

1. Tissue that is particularly rich in lymphocytes (and accessory cells such as macrophages and reticular cells), particularly the lymph nodes, spleen, thymus, Peyer's patches, pharyngeal tonsils, adenoids and (in birds) the Bursa of Fabricius. Central lymphoid tissue: A term occasionally used as synonym for primary lymphoid tissue but should be avoided to prevent confusion between anatomical location, which is irrelevant and centrality in the system. Peripheral lymphoid tissue: Secondary lymphoid tissue, not necessarily located peripherally. Primary lymphoid tissue: Lymphoid tissues in which immune cells develop as opposed to the secondary or peripheral lymphoid tissues in which antigen independent or antigen dependent stages of maturation take place and in which responsive lymphocytes are found. Primary lymphoid tissues are foetal liver, adult bone marrow and thymus (and Bursa of Fabricius in birds). Secondary tissues are lymph nodes, spleen, tonsils and mucosa associated lymphoid tissue. (20 Mar 1998)

Lexicographical Neighbors of Lymphoid Tissue

lymphography
lymphohematopoietic
lymphohistiocytic
lymphohistiocytoses
lymphohistiocytosis
lymphoid
lymphoid cell
lymphoid haemoblast of Pappenheim
lymphoid hypophysitis
lymphoid interstitial pneumonia
lymphoid interstitial pneumonitis
lymphoid leukaemia
lymphoid polyp
lymphoid ring
lymphoid series
lymphoid tissue (current term)
lymphoidectomy
lymphoidocyte
lymphokine
lymphokines
lymphokinesis
lympholeukocyte
lymphology
lymphoma
lymphomageneses
lymphomagenesis
lymphomas
lymphomata
lymphomatoid
lymphomatoid granulomatosis

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