seizure, a sudden, uncontrolled burst of abnormal electrical activity in the brain that can cause changes in behavior, movements, or consciousness, benign, a term used for non-cancerous growths or tumors that are not harmful to health, bone marrow, the soft, spongy tissue inside bones where blood cells are produced, fatigue, extreme tiredness or lack of energy that makes it difficult to carry out daily activities, lymph nodes, small, bean-shaped structures in the lymphatic system that help filter lymph fluid and store immune cells, malignant, a term used for cancerous growths or tumors that can be harmful and may spread to other parts of the body, to clot, the process by which blood thickens to form a solid mass to stop bleeding from an injury or wound.

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