secondary lymphoid tissue

synonym: secondary lymphoid organ
https://doi.org/10.1351/goldbook.13663
Tissue (organ) in which antigen-driven proliferation and differentiation of mature B and T lymphocytes take place following antigen recognition.
Examples: Lymph nodes, Peyer’s patches, and the spleen.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1242 [Terms] [Paper]