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In truth, every single part your body is connected with your immune system. However, the Lymphatic system, which is widely (but not always) included in the Immune System, work the closest with it. The Cardiovascular System works to circulate the white blood cells, B-cells, T-cells, antibodies, etc. Your Integumentary System, or your skin and various membranes, provide the ever-important "first line of defense." By secreting mucus, sebum, and other substances, the Integumentary System effectively kills of harmful bacteria living your skin and traps microorganisms that are trying their best to get in. The gastric juices in your stomach also kill most bacteria and other living organisms. The bones of the Skeletal system make "uneducated" white blood cells which become "educated" in both the bone marrow or the Thymus gland of the Endochrine System. I could go on for days. If you're really interested, take Anatomy and Physiology or something.

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14y ago

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