
cells and organs that make up the lymphatic system, such as white blood cells (leukocytes), bone marrow, and the thymus, spleen, and lymph nodes.[1 related articles]
Found on
http://www.britannica.com/eb/a-z/l/87

<anatomy> 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...
Found on
http://www.encyclo.co.uk/local/20973

a latticework of reticular tissue whose interspaces contain lymphocytes.
Found on
http://www.encyclo.co.uk/local/21001

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.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

Lymphoid tissue: A part of the body's immune system that helps protect it from bacteria and other foreign entities. Lymphoid tissue is rich in lymphocytes (and accessory cells such as macrophages and reticular cells). The lymphoid tissue includes the lymph nodes, spleen, tonsils and adenoids and the thymus (an organ in the neck that is particularly...
Found on
http://www.medterms.com/script/main/art.asp?articlekey=4224

Tissue made up white blood cells and lymphatic vessels.
Found on
http://www.virology.net/ATVGlossary.html

tonsils, adenoids, lymph nodes, spleen and other tissues that act as the body's filtering system, trapping invading microorganisms and presenting them to squadrons of immune cells that congregate there.
Found on
https://aidsinfo.nih.gov/news/128/hiv-vaccine-glossary
No exact match found.