Lymph Nodes. A rounded mass of lymphatic tissue that is surrounded by a capsule of connective tissue. Lymph nodes filter lymph (lymphatic fluid), and they store lymphocytes (white blood cells).They are located along lymphatic vessels.Also called lymph gland.ymph Nodes. A rounded mass of lymphatic tissue that is surrounded by a capsule of connective tissue. Lymph nodes filter lymph (lymphatic fluid), and they store lymphocytes (white blood cells).
Staying away from these foods is the best way to avoid a reaction. Your childâs doctor may suggest other steps to prevent a reaction. If your child has any food allergy symptoms, see your childâs doctor or allergist. Only a doctor can properly diagnose whether your child has an IgE- or non-IgE food allergy.
Allergies are an abnormal response of the immune system. People who have allergies have an immune system that reacts to a usually harmless substance in the environment. This substance (pollen, mold, and animal dander, for example) is called an allergen. Allergies are a very common problem, affecting at least two out of every 10 Americans.