Accumulations of lymphocytes embedded in connective tissue networks are called and can be present in static locations or acutely accumulate in areas of infection.

lymphatic tissues

Explanation:

Lymphatic tissues -

Tissues are made up of the combination of the many cells together ,

The Lymphatic tissues are composed of the combination of the  reticular cells and accessory cells .

These tissues consists of thymus , tonsils and spleen .

These tissues helps to protect the body from various foreign bacterias , and hence , is the part of the immune system of the body .

Hence , from the given information of the question ,

The correct answer is lymphatic tissues .

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