Answer:
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 .