Answer:
<u>Lymphatic Tissues</u>- secondary lymphatic tissues.
Explanation:
Tissues in the body where lymphocytes are found are called lymphatic tissues.These lymphocytes can be arranged in different forms in the lymphatic tissue.When arranged in cylindrical shape in groups they are called lymphatic patches.
The Lymphatic tissues can be primary when found in the thymus and bone marrow for maturation of antigen recognition lymphocytes, and removal of self -recognition antigens.
OR
Secondary Lymphatic tissues where antigen are accumulated,and the mature T and B lymphocytes recognise them, for adaptive response. it is the secondary lympahtic tissues that proliferation of Tand B cells to effectors and memory cells; occurs for migration to the sites of infections, to attack the antigens.
Invasion of the body by antigens can be at different locations in the body, thus the lymphatic tissues are well distributed in any part of the body( spleen, thymus,tonsils ) to provide protection, in anticipation of antigenic attack.