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 .

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .