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Lymphatic System

Across
Two small masses of lymphoid tissue in the throat
An abdominal organ involved in the production and removal of blood cells in most vertebrates and forming part of the immune system.
Pair of glands composed of lymphoid tissue, found in nasophaynx;also called phayngeal tonsil
Down
A lymphoid organ situated in the neck of vertebrates that produces T cells for the immune system.
Each of a number of small swellings in the lymphatic system where lymph is filtered and lymphocytes are formed.
Substance causes an allergic reaction.